Marti Gerritsen

Kelly Collins is the lead female character in the show within a show Cult. An LAPD detective, Cult centers around her cat and mouse game with Billy Grimm.

Kelly was Billy's former follower/lover. Since escaping from the cult, Kelly has become an LAPD detective, but, when her sister is kidnapped, Kelly finds herself drawn back into an investigation of the group’s activities. In her investigations, she struggles to keep Billy at a safe distance, knowing he would stop at nothing to get her back.

Kelly is portrayed by Marti Gerritsen in the world of Cult, and her real life actress is Alona Tal.