'Cellmate Secrets': Get a Sneak Peek at Chris Watts' Life Behind Bars (Exclusive)
, is back with an all-new episode focused on Chris Watts, who was convicted of murdering his pregnant wife and their two daughters and sentenced to five life sentences without parole. ET has an exclusive sneak peek at his life behind bars and his relationship with clinical psychologist Christa Richello.In the clip, Richello, who had a close and intimate relationship with both Watts and his cellmate, Dylan Tallman, says that was used by the killer.