Lifetime's compelling and provocative drama series Mary Kills People about an ER doctor who serves as an angel of death helping people die with dignity, returns March 12, at 9pm ET/PT, joining UnREAL as part of Lifetime's premium scripted block. Picking up eight months after Mary (Dhavernas) and Des (Short) framed Grady (Greg Bryk) for the deaths of their patients, Des is happy to reteam with Mary following his stint in prison, but Mary questions whether she was better off fighting the good fight without him.