Hannah McKay is a fictional character portrayed by Yvonne Strahovski, in the seventh and eighth seasons of the Showtime television series Dexter. Hannah is first introduced in season 7, episode 3, "Buck the System", as the former accomplice of a spree killer, and Hannah becomes romantically involved with Dexter Morgan. At some point during the timeline in between Dexter and the revival series Dexter: New Blood, Hannah dies of pancreatic cancer.