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Dial M For Mayor
Season 4, Episode 12
Dial m for mayor
Air date January 16, 2012
Written by Christine Boylan
Directed by Kate Woods
Episode guide
"Till Death Do Us Part"
"An Embarrassment of Bitches"
Season 4
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Dial M For Mayor is the twelfth episode of the fourth season of Castle.


A murder investigation threatens the future career of Robert Weldon, the mayor of New York City and a personal friend of Castle, who is contemplating a run for Governor.




Main Cast[]

Guest Cast[]


Castle: Well he has good reason not to turn over his coat.
Beckett: Yes, guilt.
Beckett: What am I supposed to do, Rick? I can’t just stop being a cop just because it’s inconvenient.
Castle: No, no, no, no. You can wait for something else, for another lead.
Beckett: For the coat to disappear? You think I don’t know what’s at stake at here? You think I actually want to do this?
Castle: Then don’t do it.
Beckett: I don’t have a choice.
Mr. Smith: You're a writer, finish this sentence, 'If Weldon had been run out of office–'
Castle: I'd be gone from the Twelfth Precinct."
Smith: And then who'd keep Beckett from looking into things she shouldn't? Who'd keep her out of harm's way?
Castle: So you did this to protect her? Why?
Smith: You play chess, Mr. Castle? Sometimes a well-placed pawn is more powerful than a king.


  • This marks the second appearance of the mysterious conspirator, Mr. Smith, who contacted Castle. Whoever ordered the murder of Johanna Beckett also doesn't want the Mayor to run for Governor. However, Mr. Smith was willing to give Castle sufficient information to enable him to thwart the attempt to discredit the Mayor, claiming it was worth it to keep Castle working with Beckett, and stopping her from investigating her mother's murder. This compromise was apparently acceptable to the conspiracy that killed Beckett's mother.
  • In this case, Castle was completely right. The Mayor wasn't involved, a conspiracy was using Beckett's investigation to discredit him, and this did prevent him from running for governor. Although she doesn't realize it, Beckett served the interests of her mother's killers by not listening to Castle.
  • Castle revealed (obliquely) to Detective Ryan that this case might be related to Beckett's mother's murder, but asked him not to tell Beckett. This indiscretion might come back to haunt him later.
    • While every person involved in the Beckett Conspiracy has later died, both the killer and his mysterious lawyer survive (at least as of the episode's end). It is unknown if Castle will pursue these leads in his secret investigation.
  • Alexis's resolution to get an internship (ostensibly at Castle's suggestion) will bear fruit in upcoming episodes.
  • The title is an homage to the classic 1954 Alfred Hitchcock film, "Dial M for Murder", starring Ray Milland and Grace Kelly.


  1. Specht's character was credit just as Screaming D.A.G. Operator at the end credits of this episode