All 22 episodes from the eighth season of the American crime drama following mystery writer Richard Castle (Nathan Fillion). In this series, Castle poses as a college professor in order to investigate the brutal murder of a student, while a tip off from a mystery stranger leaves his wife Kate (Stana Katic) on the run and fighting for her life. The episodes are: 'XY', 'XX', 'PhDead', 'What Lies Beneath', 'The Nose', 'Cool Boys', 'The Last Seduction', 'Mr. and Mrs. Castle', 'Tone Death', 'Witness for the Prosecution', 'Dead Red', 'The Blame Game', 'And Justice for All', 'G.D.S', 'Fidelis Ad Mortem', 'Heartbreaker', 'Death Wish', 'Backstabber', 'Dead Again', 'Much Ado About Murder', 'Hell to Pay' and 'Crossfire'.