On CASTLE's upcoming episode, titled "Hunt," In the powerful conclusion of a two-episode story arc, Castle's efforts on the case suddenly put his own life in danger. Emmy and Golden Globe-winner James Brolin ("The West Wing," "Marcus Welby, M.D.") guest stars as Castle's dad, on "Castle," MONDAY, FEBRUARY 25 (10:01-11:00 p.m., ET). Check out a first look below!