"My Bad" is the premiere of the fifth season of the Showtime series Dexter and the show's forty-ninth episode overall. It was written by Chip Johannessen, the show's former executive producer and showrunner, and directed by Steve Shill. It originally aired on September 26, 2010. It brings the final resolution to the Trinity Killer plot that was present in season four and also features the last performance by Julie Benz as Rita.