Psych, the hit original series starring James Roday, Dulé Hill and Corbin Bernsen, returns with its fourth season. Always a mix of romance and plenty of mayhem, Psych ratchets up the action this season as the crime-fighting duo of Shawn and Gus save old-western towns, battle an international art thief and even perform an exorcism or two. The fourth season guest stars include Cary Elwes, James Brolin, and Sendhil Ramamurthy plus a return appearance by Rachael Leigh Cook.