WORKING SECURITY FOR A POLITICIAN PUTS DETECTIVE KEVIN RYAN IN THE MIDDLE OF AN ASSASSINATION PLOT, ON ABC'S "CASTLE"

"At Close Range" - Detective Kevin Ryan is on the security detail of a charismatic congressman attending a charity event when shots suddenly ring out. Driven to apprehend the killer, Ryan must revisit the events that led up to the shooting, with the help of Castle and Beckett, on "Castle," MONDAY, MARCH 23 (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: Maya Stojan as Tory Ellis, David Conrad as Frank Kelly, Reiko Aylesworth as Mia Lopez, Ricardo Chavira as Alex Lopez, David Andrews as Carl Shelton, Annie Little as Carolyn Decker.

"At Close Range" was written by Jim Adler and directed by Bill Roe.

"Castle" is produced by ABC Studios. The executive producers are Andrew Marlowe (creator), David Amann (showrunner), Rob Bowman, Armyan Bernstein, Rob Hanning and Terri Edda Miller.

"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