Season 6, Episode 1
Air date September 23, 2013
Written by Rob Hanning
Directed by John Terlesky
Episode guide
Castle Group Photo Season 6.jpg
Season 6
Season 6 is now available on DVD  

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Season 5   Season 7

Valkyrie[1] is the first episode and the season premiere of the sixth season of Castle.


Last season ended with Beckett wrestling over whether to take a high-profile job in DC -- a dilemma made more complicated when Castle proposed to her. In the Season 6 Premiere of “Castle,” Castle and Beckett will deal with the consequences of their decisions against the backdrop of a high-stakes investigation.

Lisa Edelstein ("House") guest stars in a three-episode arc as a tough and highly-skilled Federal investigator whose appearance plays a vital role in Beckett's decision about her future.




Main Cast

Guest Cast


Castle: Kate, I'm not proposing to you to keep you here or because I'm afraid I'm gonna lose you. I'm proposing because I can't imagine my life without you.
Beckett: Well, in that case, Richard Edgar Alexander Rodgers Castle, yes. Yes. I will marry you.
Esposito: If your hero’s fictional cop buddies are anything like your real cop buddies, then they’d have real work to get back to. So, bye bye now.
Castle: What if our hero was offering Knicks floor seats?
Beckett: : Oh my God! Oh my God. You’re proposing.
Castle: Okay. You’re surprised.
Beckett: Of course I’m surprised. I thought you were breaking up with me.
Castle: By offering you a ring?
Beckett: Well, you just-– you seemed so serious.
Castle: Of course I'm serious. This is the most serious thing I've ever done.
Beckett: Good.
Beckett: No, Babe, can--can you listen for a second?

Beckett: No, not "not yes". I... I...
Castle: You do know how this works, right?
Castle: Was I...? How bad?
Beckett: Based on the amount found in your bloodstream, you have less than a day to live.

Featured Music



  • This is the first time in a Castle season premiere stated "To Be Continued" at the end of the episode.
  • Beckett calls Castle by both his legal and given names "Richard Edgar Alexander Rodgers Castle" when she says yes to Castle proposal of marriage.
  • Alexis returns from her trip to Costa Rica early with a new boyfriend named Pi .
  • Beckett and Castle exchange "I Love You" to one another.
  • Ryan states that he and Jenny have got only 4 more months before their baby is born.
  • Beckett and Castle discover the thieves left the building through the sewers after remembering the case regarding the secret entrance to The Old Haunt.
  • Beckett keeps her engagement ring around her neck.
  • Watch for Castle when Beckett told him that he has been poison and has less than a day to live.


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