Production # F014 - “The Double Down”

When two separate murders are committed on the same night, Castle wagers Ryan and Esposito that he and Beckett will solve theirs first. The frenzied race to catch their respective killers and win the bet leads each investigative duo to a likely suspect, only to find that they both have airtight alibis. But bizarre twists in both cases force the two teams to work together to unravel the mind-bending mystery behind each murder.

Written by David Grace
Directed by Rob Bowman

Cast
Nathan Fillion as Richard Castle
Stana Katic as NYPD Detective Kate Beckett
Susan Sullivan as Martha Rodgers
Molly Quinn as Alexis Castle
Ruben Santiago-Hudson as NYPD Captain Roy Montgomery
Tamala Jones as Medical Examiner Lanie Parish
Jon Huertas as NYPD Detective Javier Esposito
Seamus Dever as NYPD Detective Kevin Ryan

Guest Cast
Arye Gross as M.E. Perlmutter
Brennan Elliot as Jason Cosway
Diana-Maria Riva as Detective Roselyn Karpowski