The Last Seduction In order to hunt down the brutal murderer of a grifting seducer, Castle & Beckett must investigate New York’s elite. Meanwhile, Castle plans to surprise Beckett on their one-year wedding anniversary. Details Casts Title The Last Seduction Genres Drama Crime Release Date 2015-11-16 Episode Runtime 00 Hours 45 Minutes Season Number 8 Episode Number 7 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 Toks Olagundoye Hayley Shipton