ABC has released the full set of HQ promotional photos for Castle episode 8.14 'The G.D.S.', featuring Nathan Fillion as Richard Castle and guest stars Summer Glau as Kendall Frost and Gerald McRaney as Mason Wood.

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Here's the synopsis for Castle episode 8.14 '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.

Hopefully a first sneak peek video will be available soon, so stay tuned! 'The G.D.S.' will air on ABC on Monday, March 7 at 10:01-11:00 p.m. EST.