Tell Me Your Secrets centers on a trio of characters each with a mysterious and troubling past, including Emma, a young woman who once looked into the eyes of a dangerous killer, John, a former serial predator desperate to find redemption and Mary, a grieving mother obsessed with finding her missing daughter. As each of them is pushed to the edge, the truth about their pasts and motives grows ever murkier, blurring the lines between victim and perpetrator.