CASTLE MAKES A WAGER WITH RYAN AND ESPOSITO AS TO WHO CAN SOLVE A MURDER CASE FIRST, ON ABC'S "CASTLE"

"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, on "Castle," MONDAY, DECEMBER 14 (10:00-11:00 p.m., ET/PT) on ABC. (Rebroadcast: OAD: 9/28/09)

"Castle" stars 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 and 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.

"The Double Down" was written David Grace and directed by Rob Bowman.

"Castle" is broadcast in 720 Progressive (720P), ABC's selected HDTV format, with 5.1 channel surround sound and Spanish subtitles via secondary closed captioning. This program carries a TV-PG,L,V parental guideline.

For more information on "Castle," visit ABC.com