All 23 episodes from the sixth season of the American crime drama following mystery writer Richard Castle (Nathan Fillion). In this series, Castle and Detective Kate Beckett (Stana Katic)'s relationship becomes more serious despite her taking a new job at the Attorney General's office in Washington DC. When Castle finds his life is in danger after being exposed to a deadly toxin Beckett and her new partner Rachel McCord (Lisa Edelstein) have less than 24 hours to locate the antidote. The episodes are: 'Valkyrie', 'Dreamworld', 'Need to Know', 'Number One Fan', 'Time Will Tell', 'Get a Clue', 'Like Father, Like Daughter', 'A Murder Is Forever', 'Disciple', 'The Good, the Bad and the Baby', 'Under Fire', 'Deep Cover', 'Limelight', 'Dressed to Kill', 'Smells Like Teen Spirit', 'Room 147', 'In the Belly of the Beast', 'The Way of the Ninja', 'The Greater Good', 'That '70s Show', 'Law and Boarder', 'Veritas' and 'For Better Or Worse'.