Sera Gamble was a writer and executive story editor for Supernatural. Beginning with season three, she also became a producer with a promotion to supervising in season four and executive producer in season five. In season six and seven, she took over as showrunner following Kripke's departure. At the end of Season 7, Gamble decided to leave Supernatural to focus on new projects, and left the seat of showrunner to Jeremy Carver.