CASTLE RETURNS TO LOS ANGELES IN SEARCH OF ANSWERS ABOUT HIS MISSING TIME, ON ABC'S "CASTLE"

Summer Glau and Gerald McRaney Guest Star

"The G.D.S." - Castle returns to the City of Angels in search of answers about his missing time. But things take a deadly turn when he's recruited by the legendary Greatest Detective Society to help solve a murder, on "Castle," MONDAY, MARCH 7 (10:01-11:00 p.m. EST), on the ABC Television Network. Summer Glau guest stars as Kendall Frost, a heady private detective in Los Angeles who competes with Castle to try solving the murder, plus Gerald McRaney guest stars as Mason Wood, the head of the Greatest Detective Society.

"Castle" stars Nathan Fillion as Richard Castle, Stana Katic as NYPD Detective 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: Summer Glau as Kendall Frost, Jason Manual Olazabal as Detective Menendez, Gerald McRaney as Mason Wood, Doug Savant as Victor Nigel.

"The G.D.S." was written by Alexi Hawley and directed by John Terlesky.

"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 airdate.