WHILE CASTLE & BECKETT INVESTIGATE A GRISLY MURDER, THEY MEET A SUSPECT WHO CLAIMS HE'S FROM THE FUTURE, ON ABC'S "CASTLE"

Joshua Gomez Guest Stars

"Time Will Tell" - A grisly murder investigation leads Castle and Beckett to a suspect (Joshua Gomez, "Chuck," guest stars as Simon Doyle) who claims he's traveled back in time to stop terrible events from unfolding, events that will change the course of human history. Is he simply a deluded killer, or is it possible that he's telling the truth, on "Castle," MONDAY, OCTOBER 21 (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, Penny Johnson Jerald as NYPD Captain Victoria Gates, Tamala Jones as Medical Examiner Lanie Parish, Jon Huertas as NYPD Detective Javier Esposito, and Seamus Dever as NYPD Detective Kevin Ryan.

Guest Cast: Joshua Gomez as Simon Doyle, Tim Russ as Dr. Malcolm Wickfield, Vanessa Bell Calloway as Beryl Wickfield, Myko Olivier as Pi.

"Time Will Tell" was written by Terri Edda Miller & Andrew W. Marlowe and directed by Rob Bowman.

"Castle" is produced by ABC Studios. Andrew Marlowe serves as executive producer/writer, along with executive producers Rob Bowman, David Amann, David Grae, and Armyan Bernstein.

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

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