When retired hypnotist Dr. Lillian Marlow is asked by police to consult on a baffling case, she's reluctant to return to a world she thought she'd left behind. But the murders are too strange to ignore: each victim appears to have committed their own death, seemingly under someone else's control. As Lillian digs deeper, she uncovers a hidden underworld of powerful individuals using hypnosis and mind manipulation as weapons—and realizes she may be their next target.