Credit: Karen Neal/ABC Television Group © 2012 Disney Photo: Beckett in Season 4, Episode 14: “The Blue Butterfly”

ABC's Castle is all new tonight Monday, February 6, 1947. Er, oops — we mean 2012.

Tonight, our favorite mystery novelist will travel back in time to New York's Golden Age after he finds an old diary that's somehow linked to a case the 12th precinct is investigating in the present day.

Rick Castle doesn't go alone, though. He brings Detective Kate Beckett and the others with him for a wild ride to the famous Penny Baker Club.

Each member of the team takes on a different 1940s persona (Ryan as an Irish thug, Lanie as a blues singer, etc.) as Rick continues playing out the story of "The Blue Butterfly" in his mind.

To see what happens when Castle and Beckett travel to 1947, tune in tonight at 10 p.m. ET on ABC for Season 4, Episode 14: "The Blue Butterfly."


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