A FIGURE FROM ESPOSITO'S PAST IS THE KEY TO A MURDER, ON ABC'S "CASTLE"

"Heartbreaker" - A clue at the scene of the death of an armored-car driver leads Beckett and Castle back to an old case solved by Esposito. But complications arise when they learn that Esposito might not have been telling them everything about his past with the culprit, on Castle," MONDAY, APRIL 4 (10:01-11:00 p.m. EDT) on the ABC Television Network.

"Castle" stars Nathan Fillion as Richard Castle, Stana Katic as NYPD Captain Kate Beckett, Tamala Jones as Medical Examiner Lanie Parish, Jon Huertas as NYPD Detective Javier Esposito, Seamus Dever as NYPD Detective Kevin Ryan, Molly Quinn as Alexis Castle with Susan Sullivan as Martha Rodgers. For season eight, Toks Olagundoye ("The Neighbors") joined the series as Hayley.

Guest cast: Angelica Celaya as Sonia Ruiz, Dean Cudworth as Michael Kirby, Michael Cognata as Darrl Ives, Gonzolo Menendez as Ronaldo.

"Heartbreaker" was written by Barry O'Brien and directed by Tom Wright.

"Castle" is produced by ABC Studios. Executive producers are Terence Paul Winter, Alexi Hawley, Rob Bowman, Rob Hanning and Armyan Bernstein.

"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 the airdate.