CASTLE & BECKETT HUNT HER EX-PARTNER'S KILLER IN LOS ANGELES, ON ABC'S "CASTLE"

Gene Simmons, Dominic Purcell, D.B. Sweeney and Jason George Guest Star

"To Love and Die in L.A." - While investigating the shooting death of her ex-partner in New York, Beckett comes to believe the suspect has fled to Los Angeles. Against orders, she travels to L.A., going renegade to track down the killer, with Castle unexpectedly along for the ride. As they dig deeper into the motives, they uncover a trail that leads from a rooftop pool in Hollywood to the sandy beach of Santa Monica. Along the way, they visit the set of the "Heat Wave" movie (based on Castle's book) and enlist the cast to help break the case. But as they get closer to apprehending the killer, Castle begins to wonder whether Beckett is out for justice -- or revenge -- on "Castle," MONDAY, MAY 2 (10:01-11:00 p.m. ET) on the ABC Television Network.

In the episode, Gene Simmons (legendary rock star of KISS) appears as himself, Dominic Purcell ("Prison Break") guests as a local businessman who may have a connection to the murder, D.B. Sweeney ("The Cutting Edge") plays a detective in Robbery Homicide who questions Castle and Beckett about their rogue investigation, and Jason George ("Off the Map") guests as an entrepreneur with a connection to the murder case.

"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: Gene Simmons as himself, Dominic Purcell as Russell Ganz, D.B. Sweeney as Detective Kyle Seeger, Jason George as Charles Kelvin, Justice Gamble as Ochoa (Esposito in the movie), Ryan Deal as Raley (Ryan in the movie).

"To Love and Die in L.A." was written by Alexi Hawley and directed by John Terlesky.

"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