Castle Wiki
Kate Beckett
Vital Statistics
Title Captain
Full Name Katherine Houghton Beckett (birth name)
Katherine Castle (married name)
AKA Kate
Katie (by Jim Beckett)
Lola Black [1]
Jean Harrington [2]
Kit Kat (by Rogan O'Leary)
Gender Female
Status Alive
Occupation NYPD Captain
NYPD Homicide Detective (promoted)
Former Federal Government Agent
Former Model
Spouse(s) Richard Castle (husband, 2014-)
Rogan O'Leary (1999-2014, ex-husband)
Josh Davidson (ex-boyfriend)
Tom Demming (dated)
Will Sorenson (dated)
Parents Jim Beckett (father)
Johanna Beckett † (mother)
Martha Rodgers (mother-in-law)
Jackson Hunt (father-in-law)
Rita (step-mother-in-law)
Children Alexis Castle (step-daughter)
Lily Castle (daughter)
Jake Castle (son)
Reece Castle (son)
Other family Theresa (aunt)[3]
Sofia (cousin)[4]
Character Information
Appearances All except "Cool Boys" and "The G.D.S."
Portrayed by Stana Katic

Katherine Houghton "Kate" Beckett is an NYPD Captain in charge of the 12th Precinct, after being promoted from homicide detective, and a former Federal government agent. Beckett is now the wife of Richard Castle. She is portrayed by Stana Katic.


Katherine Houghton Beckett was born to Jim and Johanna Beckett on November 17, 1979. She was raised in Manhattan.

Her grandfather was an amateur magician and frequently brought her to the famous Drake's Magic Shop after school in her early teens, resulting in her fascination of the art. She is also a comic book fan, having bought her first when she was 14 and envisioning herself as Elektra if she had a choice of what character to be. She was also raised by her father to be a baseball fan.

Beckett went to Stuyvesant High School, a public school in New York City reserved for highly gifted students. She then studied pre-law at Stanford, dreaming of becoming the first female Chief Justice of the Supreme Court, before transferring to New York University after her mother's death to pursue a career in law enforcement. Between her junior and senior year of college, she spent a semester studying in Kiev, Ukraine.

She hints to Castle many times about having a wild past and according to an old friend, Madison Queller, she was "the biggest scofflaw" in high school and was in relationships with a variety of men. She spent one summer while in high school modeling as opposed to waitressing, eventually earning enough money to buy a 1994 Harley Softail Motorcycle, which she still rides, although her father strongly disapproves of it and once even threatened to send her to a nunnery for. She also had a beauty queen, Debbie Winaker, for a roommate during her freshman year.

More info on Johanna Beckett's death here

Jim and Johanna Beckett, Kate's parents

On January 9, 1999, when she was 19, her mother, Johanna, was stabbed to death while on her way to meet with Jim and Kate for dinner. The detective in charge of the investigation, Detective John Raglan, was apparently never able to find the killer and attributed her death to random gang violence. Kate, though, believes that there was more to her mother's murder than a random killing, thinking that the investigating detectives ignored every other evidence that could lead them to her mother's murderer.


Her father took Johanna's death hard and became an alcoholic. She was eventually able to help her father get through it, though. From then on, she has since worn her mother's wedding ring as a neck lace for "the life she lost" and her father's watch, an Omega Speedmaster Professional, a.k.a. "Moonwatch", for "the life she saved".

On the other hand, her mother's death inspired Beckett to become a cop: to be a detective that actually looks for justice for the sake of the victims' families for the right reasons without 'pigeon-holing' crimes the way Detective Raglan did on her mother's case. Other than that, she also wanted a position in the force where she could investigate her mother's death further.

Richard Castle's books and the fictional shows Nebula 9 and Temptation Lane also apparently played their role in helping Kate get through her mother's death.

Beckett's training officer after leaving the academy was Mike Royce, who according to Beckett was "the only one who understood the obsession that drove her." His stories and influence in her life later led to her fall in love with him.

Beckett then became a detective for the New York Police Department, specifically the Twelfth Precinct Homicide Squad, where she works with fellow detectives Javier Esposito and Kevin Ryan, and medical examiner Lanie Parish, under Captain Roy Montgomery.

After spending the first three years of her career as a cop drowning herself in studying her mother's file and coming up with nothing, she finally decided to put it behind her and just try to forget about it and avoid delving deeper into the case. According to Captain Montgomery, her main strength as a detective lies in her ability to empathize with the relatives of violent crimes, which she does better than anyone he knows.

At one point in her career, she teams up with FBI Agent Will Sorenson for a kidnapping case that did not end well. The two become romantically involved, but the relationship ends when Will pursues a career in Boston, a career move he chose over Kate.


In the pilot episode, Beckett leads the investigation into the murder of Allison Tisdale, which is staged in the style of a death scene described in the Richard Castle's novel Flowers For Your Grave, along with other murders based on Castle's fiction.

Beckett has Castle consult on the case, and though she tries to limit his access, he repeatedly violates police protocol. Although the killer is apparently caught when he leaves his fingerprints, on a note he allegedly sent to Castle, Castle convinces Beckett to continue the investigation based on a hunch. The two discover that the killer was actually Allison's brother, setting up a mentally ill client of his sister - a social worker - so that he could claim the majority of their father's estate, due to his father suffering from terminal cancer. By the end of the pilot, Castle uses his friendship with the Mayor to get partnered with Beckett, under the pretense of conducting research for a new series of novels, starring a detective based on Beckett. When Beckett's learns that her literary alter-ego will be named "Nikki Heat", she disapproves of the "stripper name" and asks Castle to change it, which he declines to do, and the title of his first book is also unveiled, 'Heat Wave', which has a sexual connotation to it.

In episode 9, Beckett's past is further revealed when a former love interest, FBI Agent Will Sorenson, returns to New York and requests Beckett's assistance on a kidnapping case. It is revealed in the episode by Sorenson that Beckett once waited in line for an hour just to get one of Castle's books signed, and also how his novels helped her through her mother's death. In the first season finale, Beckett angrily refuses Castle's help in reopening her mother's murder investigation - having concluded, after conducting her own investigations upon joining the force, that focusing on her mother's death would destroy her life - stating that if Castle interferes, it will end his police collaboration with her. Despite this, Castle confronts Beckett at the end of the episode with evidence that her mother was targeted for murder.

At the beginning of season 2 she forgives Castle for his indiscretion about her mother's murder after he delivers a heartfelt apology. During this period it was also revealed that Beckett speaks Russian after a semester in Kiev between her junior and senior year, as well as spending a brief period modeling when she was seventeen on the grounds that it seemed easier than waitressing (although the only shown photograph of her modeling period is her in sports gear). Her partnership with Castle is later extended after Castle receives a three-book publishing deal after the success of the debut Nikki Heat novel.

Beckett's mother's case is again brought up at Season 2 Episode 13 "Sucker Punch", when Lanie contacts Dr. Murray after realizing the wound similarities between the victim and Beckett's mother. Dr. Murray then reveals to Beckett that there is no doubt in his mind that the victim is killed by the same man that murdered her mother. At first, she is informed by a corrupt businessman, Dick Coonan, that it is a contract killer named "Rathborne" who killed her mother and the 3 other victims. They then set up an exchange - Castle actually donating $100,000 of his own money to cover the fee to fake a hit - so Beckett can finally catch the killer, but the killer never shows. After the exchange goes bust, she realizes that Coonan himself is the killer - given that he implied an awareness of her connection to 'Rathborne' without Beckett having made any reference to her mother's death - and as she goes to

Castle comforts Beckett after she shoots Dick Coonan, the only lead in her mother's case

arrest and confront him, he takes Castle hostage. Castle manages to free himself, but Coonan comes charging after him only to have Beckett shoot him in the chest, killing him instantly. Though she gains some closure on her mother's death, she must now figure out who ordered the hit on her mother. In the same episode, Castle states that he will stop shadowing her and feels guilty that Beckett had to kill in order to save his life. However, Beckett tells him to stay, admitting that she has grown accustomed to Castle "pulling on [her] pigtails," although she threatens to shoot him if he mentions that to anyone else, that he makes her hard job more fun, and that she wants him to be there when she finally finds whoever ordered her mother's murder.

Season 2 Kate finds her feelings pulled in two different directions with the introduction of Tom Demming (introduced in Den of Thieves)  who is a Robbery detective helping Esposito when the case crosses paths with their old precinct.  A thief is found murdered, and a key chain of the 54th is found.  Demming is thought to be a 'dirty cop', but his alibi proves him to be even more outstanding when they learn at the time of the murder he was coaching inner city kids. 

The attraction between Demming and Beckett is immediate and continues to grow in the next episode, Food to Die For.  After a prominent chef is found dead in his restaurant kitchen, the owner is an old friend of Kate's from high school, Madison.  Much to Kate's dismay Castle and Madison go on a date, which is broken up by Beckett's need to question her friend in the ongoing murder mystery.

Overkill opens with a Robbery Homicide which brings Demming into the fore front of the investigation splitting Kate between the two men and their theories on the investigation, ultimately both theories prove to be the right one. 

In a Deadly Game the season 2 Finale, Castle is being abandoned by Alexis and Martha for his annual memorial day plans in the Hamptons.  He extends the invitation to Kate, who at first is taken aback, but agrees to think about it.  Throughout the investigation Castle drops hints about the weekend and Kate put him off.  It isn't until Castle overhears Kates plans to spend the weekend at the Jersey shore with Demming that he realizes that Beckett has made her choice.  He decides that now would be a good time to end their partnership.  Using his writing or lack there of as an excuse he decides to spend the entire summer away in the Hamptons at the completion of the case.  Esposito and Ryan decide to have a going away dinner at the 12th for Castle.  Beckett realizes she wants Castle and ends her relationship with Demming telling him that he's just not what she's looking for.  Beckett decides she is going to tell Castle that she will join him for the weekend in the Hamptons, but before she can get what she needs out Castle's ex-wife/publisher shows up to join Castle in his trip to the Hamptons.  When Kate asks if its for the weekend, she says no, the summer.  Stunned Kate asks if she will see Castle in the fall...

In "A Deadly Affair", Beckett and her team find Castle at a crime scene, in the season three premiere, and arrest him for murder (which she gladly does because he didn't call her to inform that he was back in town, but after he is proven innocent, she sets him loose). Beckett "loses" a bet with Castle, which then results in him being reinstated as her partner.

In "He's Dead, She's Dead", Castle and Beckett have differences while investigate the murder of a prominent psychic. The daughter of the victim reveals a premonition to Kate, that the name Alexander is important and will influence her life. It is revealed that Beckett has looked at the biography page of Castle's official website, and thus knows his middle name is "Edgar". However, his real middle name is Alexander.

Mike Royce, Beckett's former training officer, in 3x03 "Under The Gun"

In "Under the Gun", Beckett tells Castle that she has a '94 Harley Softail motorcycle, which she worked through high school to pay for. When he asks why she will not show him a picture of the bike, she says it is because she does not think he could handle the sight of her "straddling it in tight black leather. In "Last Call", she displayed her singing talents with the rest of her team.

In "Anatomy of a Murder", Beckett said that she would break Castle out of prison if he got arrested. Prior to this, Martha told Castle that breaking someone out of prison is true love. In the episode, a male nurse smuggled his true love out of a jail.

In "3XK", Beckett breaks open the door of a motel room and cries Castle's name. After she sees that he is alive and bound to a chair, she releases him and whispers in his ear, "I'm so glad that you're okay." In the next scene, which is also the last scene of the episode, Castle sits sadly by the edge of the motel pool when Beckett arrives and brings him coffee. After talking about the killer and that Castle feels bad that he could not stop him, Beckett explains that she knows the feeling and puts her hand on his knee. Castle reacts similarly by placing his hand over hers.

In "Nikki Heat", Beckett allows Natalie Rhodes (Laura Prepon) to shadow her for inspiration.  Rhodes takes it one step further and  begins not only dressing like Kate, but acting exactly like her, scaring everyone at the 12th.  Rhodes takes her acting seriously and seduces Castle in the elevator engaging in a steamy kiss.  As the doors begin to close Kate sees the pair locked together and is obviously jealous.  It isn't until the following morning we find out Castle turned her down, to Kate's relief. (Castle is currently in a relationship with ex-wife Gina and Kate is with Josh)  Rhodes only wanted to sleep with Castle to gain insight on Jameson Rook, the male counterpart in the Nikki Heat series. Rhodes points out that Beckett and Castle are probably in love with each other but will not admit it, which lead to Castle using "verbal masturbation" (i.e. inventing a steamy, physical relationship between the characters he based on Beckett and himself, Nikki Heat and Jameson Rook).

In "Knockdown", Castle and Beckett finally kiss, although it is officially a ploy to distract a guard. Earlier in the episode she calls him "Rick." She first calls Castle "Rick" in the pilot of season 1. When Beckett thanks him for having her "back in there", Castle starts a rally that will last for the next season and a half, largely standing in for the word "love", with the simple "Always."

Castle and Beckett share their first kiss in 3x13 "Knockdown"

In "Setup", Castle and Beckett can be seen in a concealed Tarpaulin tarp together after being exposed to high levels of radiation. Castle asks Beckett about her recent trouble with Josh (her current boyfriend) and Kate responds by telling Castle about how Josh has been away a lot, and how she wants him to be there for her. Unfortunately, a man comes and interrupts before Castle can say something to Kate that could probably change their relationship, in a good way. Castle can be seen scowling at the man, who releases them from the tarp, and who informs them the radiation was from remnants of Cobalt-60.

In "Countdown", Castle and Beckett are trapped inside a giant freezer, where they huddle in an intimate position to keep warm. As Beckett becomes weaker, she turns to Castle and gently touches his face, saying "I want you to know how much I, l—". As she passes out from the cold, we can see the "l" forming on her lips. Castle begs her to wake up, before passing out himself. The first thing Castle calls for as he wakes up in the ambulance is "Beckett!".

Castle and Beckett trapped inside a giant freezer

He also looks extremely miserable when Beckett suggests she and Josh have a chance. They are both very coy with each other during the rest of the episode. As the timer gets lower and lower, they grasp hands and share "a look", and as Castle pulls his heroic feat, Beckett looks at him with a ludicrously happy expression, and jumps on him in happiness. All Beckett can do in the office "party" is sing Castle's praises. At the end of the episode, Castle says "I was thinking maybe... I should go home, get some rest.", quickly swerving away from the relationship-changing statement as he spots Josh coming towards them. As Castle walks to the elevator, Beckett and Josh embrace, however, Beckett's eyes follow Castle until she can no longer see him. In the elevator, Castle looks completely heartbroken; probably because considering the circumstances they had been in, and neither of them had managed to express their true feelings.

In "The Dead Pool", she is "courted" by another writer, Castle's protege, for information and characteristics. At the end of the episode, Castle admits openly to being jealous, and she turns the writer down, calling herself a "one writer girl". When Castle thanks her, she replies "always" and they share a charged moment before breaking away awkwardly.

In "To Love and Die in L.A.", Castle complimented Beckett on the night they should've gone home, having a charged moment. Beckett then moves to his bedroom while Castle is sitting on the couch, waiting for Beckett to come back and express her feelings. Then we see that she's very emotional, leaning against the door while her hands are on the door handle, thinking about whether open the bedroom's door, or not. When she finally decides to talk to him, Castle was already in his bedroom.

The cross-hairs line up on Beckett's chest as she delivers her eulogy at Captain Montgomery's funeral.

In "Knockout", Beckett tells Castle he and she are "over" after his unsuccessful attempt to dissuade her from continuing her obsessive pursuit of Hal Lockwood, an assassin connected to her mother's murder. While they fight Castle tells Beckett that he doesn't understand what their relationship is; that they "nearly die frozen in each others' arms", kiss, hold hands, and spend their free time together, but they never talk about any of it. He also accuses her of "hiding" in relationships with men she doesn't love. When she is delivering a eulogy at Roy Montgomery's funeral, she is shot, leading Castle to confess his love for her.

In "Rise", as the fourth season opens, Beckett is seen recovering from her surgery. When Castle comes to visit her, she tells him she doesn't recollect anything about being shot and, therefore, does not recall his confession of love for her. As the episode ends, she confesses to her psychiatrist, Dr. Carter Burke, that she remembers "everything".

In "Eye of the Beholder", Beckett and Castle work a case with Serena Kaye, an attractive insurance investigator who later becomes a suspect in the crime. Beckett instructs Castle to distract her while she and Esposito conduct a search of her room. Acting as requested, Castle takes her to dinner at the hotel restaurant. Upon leaving the restaurant, Castle texts Beckett to warn her to get out of the room. Not heeding his message, Castle has to distract Serena whilst Beckett exits the room and presses her into the wall and kisses her. Beckett is shown to be very jealous of this and her frustration is clear to the others on her team who point out how determined she is to pin Serena as the killer/thief of the crime. At the end of the episode, Serena tells Castle "I don't take things that belong to someone else", referring to Castle himself when she realizes Beckett's feelings for Castle. 

In "Cops & Robbers", Castle, along with Marta, is taken hostage in a bank robbery. Despite being a homicide detective, Beckett and her team go to the scene in the hope of saving Castle. Beckett pretends to be a Paramedic to get brief access to the Bank and tells Castle "I promise, I'm going to get you out of here." Whilst negotiating with the hostage takers, the leader of the heist becomes impatient and threatens to shoot Castle, telling Beckett he had the gun pressed against Castle's throat. Beckett then vows that if he "pulls that trigger" she will "walk straight through that door and personally put a bullet through [his] skull" and manages to convince him to not to shoot Castle. The end of the episode sees Beckett searching the rubble of the remains of the bank after the kidnappers blow it up, shouting Castle's name. When she finds him alive and well, it is clear that she has intense feelings for him and they 'connect', but they are interrupted by Castle's mother, Martha.

In "Cuffed", Beckett and Castle wake up together, handcuffed. After surviving a tiger and a few crazies, they are rescued by Ryan and Esposito. Back at the station, Castle says if he "ever has to be hitched to someone again, [he] wouldn't mind if it was [Beckett]". Beckett also says "If I had to be cuffed to someone again, I wouldn't mind if it was you [Castle], either...But next time, let's do it without the tiger."

In "Till Death Do Us Part", Castle and Beckett are each other's 'plus one' to Ryan's wedding, and each pretends that they are simply making a virtue out of necessity.

In "An Embarrassment of Bitches", Castle visits Beckett with the victim's dog, because they agreed to have a "shared costody". Before leaving, he says that the dog loved when he rubbed him between his eyes. After that, he takes Beckett's hand and starts to gently draw circles with his thumb on it, to present. While doing this for 7–8 seconds, there's obviously a moment of "connection". However, a few seconds later, she interrupts. After that, Castle says: "Yeah, there's... you get it.", then both of them become very distracted.

In "Pandora/Linchpin", the duo are involved in a CIA operation with Castle's previous muse, Sophia Turner. Beckett's jealousy is clear throughout and she even declares "Sleep with whomever you want, the more the merrier" in a moment of frustration. Castle and Beckett survive yet another attempt on their lives and are grateful for each other's company.

In "47 Seconds", Beckett and Castle are talking about how pressuring this case is. she says: "It makes you think about all those things in your own life that you don't want to put off anymore." Then she tries to say something, obviously something sensitive, judging from the sentence above, but Esposito steps into the room and interrupts. When Castle speaks with Martha, she tells him that he should tell Beckett how he feels, because "Nobody's tomorrow is guaranteed." When he tries to tell her how he feels, he gets interrupted. Some scenes later, she was trying to speak with Castle, probably about their conversation, but he wasn't there, and they got a location of their prime suspect. When Castle came back, Beckett was already in the interrogation room, so Castle goes beyond the one-way mirror. During the interrogation Beckett unknowingly confesses that she "was shot in the chest and remember[s] every second of it". Castle now knows that she heard him say "I love you" the day she was shot and has been pretending not to know. As a result of this, he begins to pull away from her, believing her lie about not remembering is her way of rejecting him and doesn't feel the same way.

In "The Limey", now that Castle has distanced himself from her and is casually seeing Jacinda, Beckett hits back and agrees to drinks with Colin Hunt, a Detective Inspector from England. At the end of the episode, when the Inspector is about to leave, he asks Beckett out for a drink, but she turns him down, while looking at Castle. After the Inspector left, she would've talked to Castle about something important, but he tells Kate that he needs to see his girlfriend because she double-parked with his car. When Beckett tells Castle that she thinks the girlfriend's not his type, he says: "She's fun, and she's uncomplicated. I think that's what my life needs now.", possibly referring to his previous statements about Beckett being a complicated person. After Castle leaves, she calls the Inspector back about she's changed her mind about the drink.

In "Headhunters", the divide between Castle and Beckett is getting greater. Despite this, Beckett still has Castle's back when he gets himself in trouble with a rogue gang cop, Detective Slaughter. She even risks her badge for him and declares "that's what partners are supposed to do", almost verbatim Castle's words on a similar occasion previously.

"Undead Again " sees a restoration in the Castle/Beckett relationship. Castle implies that he knows she remembers everything about the shooting. When the suspect says he doesn't remember about the killing, they leave the room. Later on, Castle says to Beckett in the hospital: "When a life-altering moment occurs, people remember." She responds: "Maybe it's too big to deal with, maybe he can't just face it just jet. But he maybe will, if he feels safe.", clearly talking about herself, judging from her former conversations with her psychologist.

Beckett also tells Castle that she is "almost where [she] wants to be. [She] can feel the wall coming down and [she'd] like [him] to be there when it does". Castle agrees to stick around until she is ready.

Castle and Beckett finally getting together.

In "Always", as season 4 concludes, a case sets Beckett on the trail of the man who shot her. Castle warns her that pursuing the man will lead to her death, and the only reason she is still alive is because he's made a deal with Montgomery's friend and the perpetrators. Reeling from his betrayal, and insisting that she will continue the case, Beckett causes Castle to declare he is 'done' as he can't watch her throw her life away, and they part ways. Later, Beckett ends up confronting her shooter, which culminates in her hanging from a rooftop by her finger tips. She shouts for Castle to rescue her, despite their separation.

Once rescued by Ryan and co operatives, she realizes what she wants. Since Castle is still not answering or returning her calls, she turns up at his loft in the middle of the night and when Castle asks her, "Beckett, what do you want?", she responds by saying "You", before taking Castle in her arms and kissing him. She tells him, "I almost died and all I could think about was you". After he looks at her for a moment, he pushes her up against the wall and they share several passionate kisses before Beckett leads Castle to his bedroom by the hand. 

Although the team are able to identify the man behind Johanna Beckett's murder as Senator William Bracken, the lack of evidence against him after the destruction of Montgomery's old files forces Beckett to resort to bluffing him into leaving them alone by claiming that another copy of the files still existed.

At the start of "Valkyrie", Beckett accepts both the new job in the Department of Justice and Castle's proposal, resulting in Castle spending some time alternating between New York and Washington due to Beckett moving for the new job. However, although Beckett made a positive impression on her colleagues for her investigative skills, she soon found herself unable to make the necessary moral compromises for her new role, jeopardizing a plan to infiltrate a major crime syndicate to protect a young woman who would have been forced to act as the mole.

As a result, Beckett was fired from the Department of Justice in "Need To Know", leaving her briefly unemployed due to station budget cuts preventing Gates from simply re-hiring her. Despite this, Castle was able to get her job back after he helped to reunite a prominent politician with his long-lost daughter in "Number One Fan", the city official wanting to thank the team for their role in bringing his family together.

Subsequent episodes feature various scenes of Kate and Rick planning their wedding, such as Kate receiving a dress from Matilda King, who mentored Kate during her brief modelling career. Bracken's crimes are eventually exposed when Kate discovers a long-hidden cassette recording of him ordering Johanna Beckett's death in "Veritas".



I'm not an 'if at first you don't succeed' kind of a girl, Castle. When it comes to marriage, I'm more of a 'one and done' type.

–Kate Beckett, Nanny McDead

Richard Castle

Main article: Caskett

Beckett's initial relationship with Castle was strained, in part due to her viewing him as immature and reckless. However, she did see that he was important in solving difficult cases. After "Sucker Punch", however - which featured Castle willingly using $100,000 of his own money simply to fake a contract to catch the man who killed her mother, followed by him volunteering to terminate their partnership after his presence forced her to kill her mother's murderer, without learning who hired him - her relationship with him has shown great improvement, as she can be seen getting burgers with him after a case. Castle also has come to talk with her more about Alexis, including her wanting to buy a motorized scooter and her falling in love with a boy named Ashley.

In "A Rose for Everafter", Beckett struggles with her burgeoning feelings for Castle when he turns out to have a very attractive ex, Kyra Blaine (Alyssa Milano). As well as her looks, she's real and, as Beckett observes to Castle, "I didn't think you went for real." Kyra likewise points out to Beckett that "he only dedicates books to people he really cares about, and, as she heads off on her delayed honeymoon, her last words to an uncertain Kate are, "He's all yours." Even Lanie comes right out and asks her how she feels about Castle's "one that got away" and ends up shouting after her, "Honey, just because you can't see what's going on, doesn't mean everybody else can't see what's going on."

In "Tick, Tick, Tick…", she is shown to be jealous of Castle's attention to Agent Shaw and her high-tech equipment. In the same episode, he is seen to be worried about her, even staying in her apartment to protect her from a murderer. He even made her pancakes in the morning, which she was teased about by Ryan and Esposito. During the aftermath of her apartment being blown up, Beckett stays at Castle's apartment, where she makes him breakfast.

Her relationship with Castle is further demonstrated by her closeness to Alexis Castle, his daughter. Alexis looks up to Beckett and sees her as a friend and surrogate mother at times, even asking her advice on a foreign exchange program to France; Castle once even asked Beckett to help look after Alexis if he died, when he believed that he had been cursed after looking at a Mayan mummy. Beckett also dispenses parenting advice, telling Castle that Alexis is entering her "wild-child phase." In "A Deadly Game", Beckett was on the brink of telling Castle about her feelings for him when his ex-wife (Gina) showed up to go to the Hamptons with him, saying he'll "see [Beckett] in the fall." They do not share any communication whatsoever during the summer.

In the season three premiere, "Deadly Affair", Beckett and her team find Castle at a crime scene and arrest him for murder (which she is shown to almost gladly do since he never called her once during the summer or upon his arrival back in town), but after he is proved innocent she lets him leave. Beckett "loses" a bet with Castle regarding who would discover evidence leading to the next stage of their investigation first - although they both received the evidence simultaneously-, which then results in him being reinstated as her partner. In "He's Dead, She's Dead", it is revealed that Beckett has looked at the biography page of Castle's official website, and thus knows his middle name is "Edgar". However, his real middle name is Alexander, Castle having legally changed his name from Richard Alexander Rodgers to Richard Edgar Castle (in tribute to Edgar Allan Poe) when he began writing. In "Nikki Heat", Beckett becomes jealous of the actress Natalie Rhodes when she sees her kissing Castle in the elevator. Unbeknownst to Beckett, Castle turned Rhodes down, because he felt that she was only acting out a fantasy he created (noting later to Beckett that sleeping with a woman posing as a fictional version of her would be too "meta").

In "Knockdown", Castle and Beckett kiss as a way to distract a guard, but afterwards, it's clearly seen by both their faces that they felt something more. In "Setup", Castle and Beckett can be seen in a concealed tarp together after being exposed to high levels of radiation. Castle asks Beckett about her recent trouble with her current boyfriend Josh and she says that Josh has been away a lot, and how she wants him to be there for her. Unfortunately, a man comes and interrupts before Castle can say something to Kate that could probably change their relationship. In "Countdown", Castle and Beckett are locked inside a giant freezer after raiding the location where a bomb is believed to be held. Fearing that they are both going to die as no one knows where they are, they eventually huddle together to keep warm, but are both very weak from the cold. Beckett thanks Castle for being there with her and Castle replies that he always will be. Beckett touches his face and says "I just want you to know that I...." but passes out before she can finish. Castle tries to wake her up, but he soon passes out as well. However, they are soon rescued by Esposito and Ryan. After finding the bomb later on, Castle and Beckett realize that it's too late for a bomb squad. Holding hands, they look into each other's eyes and then with only a second left, Castle yanks all the wires out, defusing the bomb as the timer hits 0:00. Relieved, he and Beckett hug. At the end of the day, Castle walks to the elevator, leaving Beckett and Josh to themselves. As Beckett is hugging Josh, she looks on at Castle until he's in the elevator. Castle looks completely heartbroken at the fact that they faced certain death twice and yet, neither one of them expressed their true feelings. In "The Dead Pool", she is "courted" by another writer, Castle's protege, for information and characteristics. At the end of the episode, Castle openly admits to being jealous, causing her to turn down the writer calling herself a "one writer girl". When Castle thanks her, she replies "always". 

In "Knockout", Beckett tells Castle he and she are "over" after his unsuccessful attempt to dissuade her from continuing her obsessive pursuit of Hal Lockwood, an assassin connected to her mother's murder. While they fight Castle tells Beckett that he doesn't understand what their relationship is since they have "nearly died frozen in each other's arms, kissed each other, held hands, and spend their free time together, but they never talk about any of it". He also accuses her of "hiding" in relationships with men she doesn't love. While delivering a eulogy at Montgomery's funeral, Castle sees in the distance the sun reflecting off what he realizes to be a sniper rifle that is aimed at Beckett. Before he can tackle her out of the way, Beckett is shot in the chest. As she's laying on the ground, Castle begs her to stay with him and confesses his love for her, telling her "I love you, Kate" before she passes out with tears in her eyes.  

Beckett survives her injury after undergoing extensive surgery and even flat lining. When Castle visits her, she claims to have lost all memory of what happened and asks him to give her some time to process everything. However, a "couple of days" turns into three months and she still doesn't call Castle during that time (thus putting this in a mirror situation to that of the previous year when Castle didn't call Beckett for the whole summer, exactly three months as well and having the same result with Castle near furious with Kate for never contacting him). When she comes back to work, she meets her new boss, former Internal Affairs member Victoria Gates, with whom she immediately has a confrontation after she learns that the investigation into the attack on her, as well as Montgomery's death, has been closed. She also learns that, while she was away, Ryan, Esposito and Castle got some information, and that a storage facility possibly holding important information burned down, apparently in an accident. She meets with Castle - who has left the precinct since Beckett isn't there - and tells him that she broke up with Josh during the summer, and that she feels that she can't have an actual relationship while the people that had her mother killed are still free. She attempts to continue the investigation of her mother's death, but Castle convinces her to try and give it some time, so that things may become clearer. 

Beckett later confesses to her psychologist that she remembers everything upon getting shot, including Castle confessing his feelings for her, but does not admit this to anyone else. She refuses to pursue any relationship (including with Castle), until the man behind her mother and Roy Montgomery's deaths has been caught. In "Eye of the Beholder", Beckett is upset and becomes jealous when Castle becomes interested in another woman, Serena Kaye, but refuses to acknowledge her feelings towards Castle, leading her psychologist to question whether she's worried that he won't wait...or that he will. Castle becomes worried about Beckett when they are working on a sniper case and realizes that she is suffering from PTSD from her shooting. He asks Esposito, who also once suffered from PTSD, to help her overcome it. To do so, Esposito has her hold the type of gun she was shot with and tells her that she has to make what happened a strength instead of a weakness. Later on, knowing that Castle was the one who talked Esposito into helping her, she thanks him. 

In "47 Seconds", Martha encourages her son to tell Beckett how he feels; however, while Beckett is interrogating a suspect, she says "I was shot in the chest and I remember every second of it", not knowing that Castle is in the observation room and overheard it. Castle is stunned and obviously hurt that Beckett has been lying to him the entire time about not remembering anything. He tells Martha that since she never said anything, he believes that it must mean that she doesn't feel the same way. Although Martha believes that he should end his partnership now that he knows the truth, Castle decides to stay on the grounds that he wants to continue, as he wishes to feel he is doing something that matters. In "The Limey", Beckett and Lanie talk about Castle, leading Beckett to admit her feelings for him. Her attempt to tell him about this (encouraged by Lanie) fails, though, as he appears with a flight attendant at the crime scene. Beckett is hurt, but still refuses to talk to him about this. In "Headhunters", Castle teams up with Detective Ethan Slaughter, clearly avoiding Beckett. She talks to her therapist about this and he suggests that maybe Castle is not ready to wait for her anymore. Beckett is devastated to hear this and is therefore happy when Castle ends his brief partnership with Slaughter. In "Undead Again", the case Beckett and Castle are working on partly mirrors their own problems such as one witness claiming not to remember anything of a murder. In the end, Beckett tells Castle that she is seeing a therapist and is working on herself which causes the wall inside her to slowly come down. To this revelation, Castle says "I'd like to be there when it does" to which Beckett replies "Yeah, I'd like you to be there, too".  

In the Season 4 finale, "Always", Beckett and Castle are forced to deal with their relationship when a murder they are investigating turns out to be linked to Beckett's shooting almost a year before. Castle, trying to get Beckett off the case, tells her he loves her and admits that he heard her saying she remembered everything. She is, however, angry that he hid important facts from her in order to protect her and refuses to back off from the case, causing Castle to end their partnership, refusing to see her throw her life away. Beckett is unable to resolve the case this time, though, and, in a near-death experience, realizes how much Castle truly means to her. After she resigns from her job, Beckett visits Castle that night and, while telling him she is sorry, shares a passionate kiss with him before they go to his bedroom hand in hand.  

In the Season 5 premiere, "After the Storm", it is implied that Beckett and Castle have consummated their relationship when Castle wakes up into his bed to find a shirt-clad Beckett walking in his bedroom with morning coffee. They speak about their night, with Beckett asks Castle if he liked it, to which Castle replies with a yes. They both agree that it was not a one time thing and want to have a serious relationship, but their conversation is interrupted when Castle's mother comes home, causing Beckett to sneak out of Castle's loft, so that Martha or Alexis don't see her. They must keep their relationship a secret since, due to Precinct rules, coworkers are not allowed to become romantically or sexually involved or one of them must become re-assigned to a new partner or department. But, even though Castle is not technically a police officer, they both fear Captain Gates will go by the rule anyway and may re-assign Beckett or possibly kick Castle out for good. So the two decide that, for the time being, they will keep their relationship a secret.

In the episode "Still", Beckett and Castle arrive at an apartment of a suspected bomber, who escapes out the window into an alley, where he's immediately cornered by Ryan and Esposito.  As he's ordered to lay on the ground, he holds out a remote that he sets to arm what is believed to be a bomb.  When Esposito radios Beckett to clear out of the apartment, Beckett steps on a floor plate, setting the trigger of the bomb.  To keep Beckett's mind off the predicament she's in, Castle distracts her with the argument of who was into who first.  The majority of the episode is a series of flashbacks proving each other's point.  As it's discovered the bomb also has a timer and will detonate soon, Beckett asks Castle to leave.  As he's leaving, Becket calls out and tells him that she loves him, and he tells her that he loves her too.  This is the first time we hear Beckett say out loud that she loves Castle.  Castle shortly returns, and with the help of Ryan & Esposito he and Beckett figure out what the disarm code is for the bomb, and Beckett is saved.  As Castle and Beckett exit the apartment to the street, the two embrace, and just as they're about to kiss, a car pulls up with Ryan, Esposito and Captain Gates, who rush up to them to show they're happy they made it out alive.  As Esposito hugs Beckett, she quietly asks him if Gates saw her and Castle about to kiss, and before he can answer, Gates says she's glad that they're both OK, and she "didn't know too many men that would have done what he (Castle) did" to stay with Beckett.  As Beckett agrees, Gates tells Beckett, "Oh for heaven's sake detective, just kiss the man."  In shock, Beckett replies, "Sir, you know?", and Gates says, "What, do you think I'm an idiot?  I needed to maintain plausible deniability, which I can continue, as long as you two both act professionally at the precinct."  Castle says he has no problem with that, but claims Beckett has a long history of coming on to him at work, to which Beckett interrupts him, and tells Gates, "I don't think it'll be a problem sir."  So their relationship is now out in the open.


Tom Demming

In "Den of Thieves", Beckett meets robbery detective Tom Demming, whom she instantly takes a liking. It is later revealed that the two have started dating, eating together at work, and even "sharing a cab." At the end of "Overkill," she shares a kiss with him, confirming that they are now in a relationship. However, in the season 2 finale, Beckett realizes she has feelings for Castle, and decides to accept his invitation to the Hampton's even though she'd previously declined it. Beckett breaks off the relationship with Demming, claiming that it "isn't what she's looking for right now". Demming asks her what she is looking for, and she merely looks away.

Will Sorenson

Beckett once dated FBI Agent Will Sorenson for 6 months after they met and worked together on a kidnapping case of a 6-year-old boy. In this case, they found the kidnapper, but the boy was already dead when they got to him. When Sorenson got a career opportunity in Boston, he chose to took it, although he seemed to have asked Kate to come with him. She declined because coming with him would have meant moving away with him again if more opportunities rise in other places. Will missed Beckett, though, and meant to call several times but, never got around to it.

Beckett and Sorenson sharing a kiss

In "Little Girl Lost", Agent Will requests for Kate's assistance in another kidnapping case, promising that they will find this child in time, which, eventually, they do.

Obviously, Will used the case as an excuse to get close to her again, although he was not expecting the presence of a shadowing novelist. This becomes evident when Will kisses Beckett when he gets her alone, although their moment is disrupted when Castle walks in on them to pop a theory.

Later, he asks her for another chance. When Beckett asks him what they will do if he has to leave again, Sorenson says that she should come with him then. When Beckett does not respond, Sorenson simply asks Beckett to think about it. Richard tells her that he could see why their relationship wouldn't work, saying that they are too alike, like "yin-yin".

In "A Death in the Family", Sorenson is in the car driving former mobster Jimmy Moran back to the safe house, when the killer pulls up next to them and shoots both Moran and Sorenson. Beckett later looks genuinely concerned at the news of his injury, and waits at the hospital with Sorenson until she has to leave for work purposes. She returns after closing the case, laughing and enjoying her conversation with her ex-boyfriend.

It is presumed that he was dispatched to another location because he was never again seen since, although in "Murder, He Wrote", Esposito finds out that he has been stationed in Europe six months prior.

Josh Davidson

In the last scene of season 3's fourth episode, "Punked", Josh (Victor Webster) comes to the precinct and picks Beckett up to go motorbike riding (shown by her going to get her helmet). Prior to this, Beckett had not told anyone that she had a new boyfriend. In the next episode, it is revealed that Josh is a biker and a cardiac surgeon.

In "Last Call", Beckett tells Castle that she and Josh had just been tucked up in bed with her laptop when his call came through to meet him at "The Old Haunt".

In "Knockdown", Castle arrived at Beckett's apartment and asked for Josh before he handed her flowers, indicating that the relationship with Josh is no longer casual.

In "Countdown", Josh stays in Manhattan, as opposed to going to Haiti, causing Beckett to think they "have a chance." Josh saves both her and Castle from hypothermia. They embrace at the end of the episode, however, Beckett seems distracted and longingly stares after Castle as he leaves.

At the end of "Rise", in which the couple are seen together several times, Beckett reveals that she broke up with Josh during her recovery.

Rogan O'Leary

In "For Better or Worse", it is revealed that Kate went to a wedding chapel with her then boyfriend Rogan O'Leary during her first year at Stanford, getting married there. She didn't think it was real at the time, but it emerges years later that the marriage was valid. She has to go to Willow Creek, NY to locate him and get him to sign the divorce papers so she can marry Castle.


Jim Beckett

Jim is Kate's father who suffered after his wife died. He became an alcoholic, but Kate was able to help him get sober. He gave her his watch as a reminder.

Johanna Beckett

Johanna is Kate's mother who got killed by Dick Coonan while investigating a case. Kate was close to her mother when she was young and she apparently looks like her mother. Her death was the reason she became a cop and is what drives her to seek justice.


Esposito & Ryan

Kate works with Javier and Kevin at the 12th and gets along very well with them. When on the job, she acts as the boss in the team and mostly instructs the two for their next moves, although they do help each other a lot. Even though they are often out to annoy Beckett and tease her with Castle, they all seem to care about each other very much. During season 3 episode 1, when Castle returned, they were adamant in allowing him to return, due to the heartache he caused Beckett. The relationship of Beckett, Esposito and Ryan is that of siblings. While Beckett is the oldest, Esposito and Ryan are very over protective.

Lanie Parish

Lanie is a colleague and Kate's best friend. Kate feels that she can tell Lanie most anything, so she finds herself often opening up to her about Castle. Kate asked her to be her maid of honor in Law & Boarder. She often tried to "hook" her up with people she knew, constantly hinting at the fact that Kate doesn't have much of a "life" outside of work. She was also the first person to tell Kate that she clearly had feelings for Castle, though much to Beckett's denial.

Jenny Ryan

Beckett first met Jenny when Ryan brought her 12th Precinct to met the team. Jenny stated that Kate look much more pretty than her picture in Cosmopolitan. They often talk a lot and become very close when Jenny ask Beckett about Ryan.

Martha & Alexis

Beckett met Rick's mother, Martha, and his daughter, Alexis, a while after she and Castle began working together. She gets along with them quite well and seems to care for them as they care for her. Rick would sometimes open up to Kate about his problems with his mother and daughter, and Rick would often talk to them about his issues with Kate, so they all seem connected through Castle.

Roy Montgomery

Roy Montgomery is Kate's first captain at the 12th Precinct. Although he is directly involved with her mother's death, when she still did not know this they were very close. Feeling guilty and somehow responsible for her mother's death, he looks out for Kate and often tries to keep Kate away from the case and out from danger. He gave his life to protect Beckett from the man who wanted her dead. Before he died, she realized that she had forgiven him and they all decided to keep his past actions a secret from everybody so that Roy could die a hero.

Victoria Gates

Months after she was shot at Montgomery's funeral, she returned and met the new captain of the precinct, Victoria Gates. She was partnered with Castle again though Gates was against it, believing Kate was better as a detective without the distractions Castle give. She gets along professionally with Gates, although she occasionally shows her soft side to Kate.

Mike Royce

Mike was Beckett's first training officer after leaving the academy. Because of his stories, she found herself falling in love with him, a feeling that was only shared by the other platonically.

When she and Royce, now a bounty hunter, encounter each other again during a case they both happen to be working on, she later realizes that he used her, leaving her feeling betrayed. She later arrests him despite their past and separate on bad terms. Later, when Beckett finds out that Royce has been murdered, she decides to investigate his death, bringing her and Castle to LA. She then receives a letter from Royce, apologizing for his mistakes and encouraging her to pursue the relationship with Castle.

Madison Queller

Madison is Beckett's old friend from high school. While in their last year, they ended up crushing on the same guy,



  • "Cool Boys" and "The G.D.S." are the only episodes in which Beckett is absent, attributed to her being away at a conference in "Cool Boys" and Castle tackling a case in Los Angeles in "G.D.S.".
  • "Sucker Punch" is the first episode to have Kate killing someone (Dick Coonan).
  • Beckett carries a Glock 17 as her sidearm until "Home Is Where the Heart Stops", where she starts carrying a Glock 19. She also carries a Glock 26 as her backup sidearm and has given it to Castle twice, once during Boom! and A Deadly Affair.
    • She has also used a Heckler & Koch USP, which she held to a Russian mobster who was threatening Castle during Deep in Death.
  • Beckett's badge number is "41319". The presence of a black 'WTC' breast bar in "Veritas" indicates she was a 9/11 first responder. However, earlier seasons show her badge number as "0334", which can be clearly read in The Mistress Always Spanks Twice.
  • According to producer Terri Edda Miller, Beckett's birthday is November 17 and she was 19 when her mother died on January 9, 1999, making her year of birth as 1979 just one year younger than actress Stana Katic who plays her. She is stated to be 32 when being wheeled into hospital in "Rise".
  • In Suicide Squeeze, Beckett revealed that she is a baseball fan and she has been going to games with her dad since she was 3.
  • In Last Call, Beckett reveals that she has a tattoo (seemingly small, someplace not easily visible, etc.) to Castle, but she doesn't state where or what it is.[5]
  • In episode To Love and Die in L.A., Kate admitted to Castle that she dressed as Gene Simmons of KISS for Halloween once.
  • She's a fan of Temptation Lane, like her best friend Lanie, and Nebula-9.
  • In Food to Die For, Madison Queller revealed that in high school, Beckett was a huge fan of Saved by the Bell and would watch rerun episodes.
  • It's rumored that she was a Girl Scout.
  • According to Little Girl Lost and Kick the Ballistics, Beckett's coffee order is a grande skim latte with two pumps sugar-free vanilla.
  • In her teens, Beckett was rebellious and a wild child, much to her parents' worry. She had rebel style with a motorcycle, tattoo, a possible belly ring, etc...


  1. Undercover name used in episode 3x22
  2. Name Beckett used in episode The Limey.
  3. Mention aunt in Castle episode Limelight
  4. Mention cousin in Castle episode Last Action Hero

External links

Cast Nathan FillionStana KaticJon HuertasSeamus DeverTamala JonesRuben Santiago-HudsonMolly C. QuinnSusan SullivanPenny Johnson Jerald
Characters Richard CastleKate BeckettJavier EspositoKevin RyanLanie ParishRoy MontgomeryAlexis CastleMartha RodgersVictoria Gates
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