CASTLE - "Castle, P.I." - After being forbidden to work with Kate Beckett or the 12th Precinct, Castle obtains a P.I. license and shows up unannounced at Beckett's crime scene, hoping to investigate alongside her as a private eye. But things don't go as Castle had planned, on "Castle," MONDAY, JANUARY 12 (10:01-11:00 p.m., ET) on the ABC Television Network. (ABC/Colleen Hayes) STANA KATIC, NATHAN FILLION, KIM HAWTHORNE
