Castle Wiki
Scott Dunn
Scott Dunn 2.jpg
Vital Statistics
AKA Chris Doherty (Stolen identity)
Gender Male
Status Incarcerated
Character Information
Appearances "Tick, Tick, Tick…" (behind the scene)
Portrayed by Dameon Clarke

Scott Dunn is an obsessive aspiring writer with psychosis who turned to serial killing and domestic terrorism to fuel his psychosis.

To help him deal with his psychosis, he had perfected a method of combining literature with reality by committing murder sprees and even terrorism and then writing about them as fiction.


He once attended a book signing by Richard Castle, where Castle advised him to 'write what he knew' in his work (it was unspecified if this inspired Dunn's decision to commit murder sprees so that he could write about them, or if he had been doing this already, and Castle just 'confirmed' the merit of his 'strategy').

This psychosis came to a head when he decided to target Detective 'Nikki Heat' - in reality Detective Kate Beckett - his profile suggesting that he went after her as his perfect 'counterpart', representing a detective who was part-fiction and part-reality.

Having selected an unwitting 'fall guy' for the murder of his three victims - choosing a man whose dog had recently been killed by another dog; Dunn's victims being a lawyer that his victim had asked to represent him, the dog-walker who'd been walking the dog that killed his, and the taxidermist who'd been hired to stuff his pet - Dunn left a message for 'Nikki' in the bullets he put in his victims (Five bullets in his first victim, four in his second and four in his third, with the bullets presenting the words 'NIKKI' 'WILL' 'BURN' when lined up together).

Although the FBI team tracking Dunn's patsy believed that he had committed suicide when about to be caught, Castle realised the truth when he noted that their killer - who had briefly spoken to them over the phone while standing in the window of an apartment - was left-handed, yet the gun had been in the dead man's right hand. This epiphany gave him time to call Beckett and warn her before Dunn could set off a bomb in her apartment.

When Dunn realized that Beckett was still alive, he took out his rage by killing a woman at random. From his actions the FBI were able to deduce his true identity, after Beckett chased him through the subway. Although Dunn attempted to regain control of the situation by capturing FBI profiler Jordan Shaw, and pretending to provide the team with evidence that would allow them to find Shaw to lead them into a trap, his deception was deduced by Beckett and Castle, who realized that he was actually in the building opposite the one currently holding the FBI team, intending to lure them in and then blow the building up.

With no time to alert the FBI, Beckett and Castle entered the building themselves, successfully capturing Dunn and freeing Shaw. Shaw reflected as she departed that, in a sense, Dunn had been defeated by Nikki Heat, as Castle and Beckett - Heat's creator and her inspiration respectively - were essentially Nikki Heat when combined into one.

Method of Killing

Obsessed with creating the perfect story, Dunn would target various, unconnected people he somehow came across by unknown means or found out about from publicity. Dunn would either pose the crimes to be picturesque or, once escalating, set up a chase with an object of fixation. His crimes trace back to an arson in '99, stabbing Chris Doherty in '04, and creating a serial killing story in Seattle with the murders of several prostitutes, hanging a, easy suspect to take the fall and appear to have suicided himself.

When Dunn found out about Richard Castle, Kate Beckett, and Nikki Heat, his psychosis finally found a rival and he didn't refuse the temptation. Targeting Beckett, deluding her as "Heat", he setup a murder investigation for her to track to try and catch him, all the while hoping to end her and go out with a bang of his own so he'd have created the perfect hero/villain dynamic as well as be famous for it. After extensively stalking Beckett beforehand, he saw his cover in Ben Conrad, a disturbed loner who dog was mauled to death by the dog of Michelle Lewis, failing to win a lawsuit in court. Dunn would call Beckett, referring to her as "Nikki Heat", from payphones to trace the sights of the murders. He shot Conrad's lawyer in a phone booth in Grand Central, Lewis at Central Park, leaving her in the carousel, and Conrad's taxidermist in a parking garage. The taxidermist, Sandra Keller, was snatched after killing her, then left at Beckett' door to say he knew where he was at all times. The bullets were inscribed with letters, each victim shot with one word in each of their bodies, which spell "NIKKI WILL BURN" when arranged. When Conrad was tracked, Dunn stood outside the window of Conrad's apartment disguised as him, then pretended to walk off and shoot himself, before killing the real Conrad with a shot to his head and leaving the scene to be found.

Dunn left a cellphone bomb which would say "Goodbye Nikki" twice before exploding at Conrad's apartment, seemingly showing the plot failed. But to hint that Dunn was still out there, Dunn held the gun in the "suicide" in a different hand than that which it was left on Conrad. The bomb demolished Beckett's apartment and nearly killed her, but Castle called her and warned just in time so she'd duck for cover in her bathtub. Dunn was livid she survived, so random woman Gloria Rodriguez was shot with Beckett hearing her screams over the call Dunn placed. Agent Jordan Shaw was then kidnapped in a final challenge, rigging a bomb in the building the FBI and SWAT were in and holding Shaw hostage in the opposite building. From shootouts to fisticuffs, Dunn tried to kill both Beckett and Castle, but the two disarmed him enough to arrest him and save the entire task for, Shaw included.

Known victims

  • Mysterious victimless fire 1999
  • Chris Doherty (Stabbed in San Francisco in February 2004)
  • Numerous unnamed prostitutes (killed in Seattle)
  • Unknown 'fall guy' (Hanged)
  • Alex Peterman (Shot)
  • Michelle Lewis (Shot)
  • Sandra Keller (Shot)
  • Ben Conrad (Shot)
  • Kate Beckett (Attempted; bombed her apartment first, tried to shoot her later)
  • Gloria Rodriguez (Shot)
  • Jordan Shaw (Kidnapped, later rescued)
  • Richard Castle (Attempted)
  • FBI and SWAT team (Attempted, had a bomb set in the building they had entered)