Castle, P.I. After being banned from the 12th precinct, Castle works his first case as a private investigator. Details Casts Title Castle, P.I. Genres Drama Crime Release Date 2015-01-12 Episode Runtime 00 Hours 45 Minutes Season Number 7 Episode Number 11 Production Companies Beacon Pictures, Experimental Pictures, ABC Studios, The Barry Schindel Company, MilMar Pictures Nathan Fillion Richard Castle Stana Katic Kate Beckett Molly C. Quinn Alexis Castle Jon Huertas Javier Esposito Seamus Dever Kevin Ryan Susan Sullivan Martha Rodgers Tamala Jones Lanie Parish Penny Johnson Jerald Victoria Gates