AFTER AN OLYMPICS HOPEFUL SWIMMER IS FOUND DEAD IN A POOL, CASTLE & BECKETT DIVE IN TO SOLVE THE CRIME, ON ABC'S "CASTLE"

Michael Connelly and Dennis Lehane Guest Star in the Episode

"The Dead Pool" - When a champion swimmer and Olympic hopeful is found dead in a training pool, Castle & Beckett dive in to investigate his murder, and uncover myriad secrets that might have led to his death. Also in the episode, crime fiction authors Michael Connelly and Dennis Lehane guest star, offering Castle their insights into the case over a game of poker, on "Castle," MONDAY, APRIL 11 (10:01-11:00 p.m. ET) on the ABC Television Network.

"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: Justin Bruening as "Rocket" Rob Tredwyck, Erik Palladino as Coach Rome, Brendan Hines as Alex Conrad, Andrew Lawrence as Tommy Marcone, Josie Loren as Bridget McManus, Michael Connelly as himself and Dennis J. Lehane as himself.

"The Dead Pool" was written by Matt Pyken and directed by Paul Holahan.

"Castle" is broadcast in 720 Progressive (720P), ABC's selected HDTV format, with 5.1 channel surround sound. A TV parental guideline will be assigned closer to airdate.

For more information on "Castle," visit ABC.com. Viewers can also follow the show via http://facebook.com/Castle and Twitter: Castle_ABC