The Sinner (2017) Detective Harry Ambrose returns to his hometown in rural New York to assess an unsettling and heart-wrenching crime -- parents murdered by their 11-year-old son with no apparent motive. As Ambrose realizes there's nothing ordinary about the boy or where he came from, the investigation pulls him into the hidden darkness of his hometown. He's pitted against those who will stop at nothing to protect its secrets -- and the mysterious Vera, who proves to be a complicated, enigmatic piece to this haunting puzzle.