Fatal Vows is an American television documentary series on Investigation Discovery that debuted on November 17, 2012. The series is presented by Brian Russell, an attorney as well as a forensic and clinical psychologist, and Stacy Kaiser, a licensed psychotherapist and relationship expert. Each episode tells the stories of marriages that turned deadly. On March 1, 2018, it was announced that the series has been renewed for a sixth season. In February 2020, after a two-year hiatus, the series returned for a seventh and final season. In April 2020, it was announced that the series would not be renewed. However, many episodes aired in an edited half hour version called Fatal Vows: Twisted Desires.