Sixteen-year-old Carter Monroe is just a quiet boy living with his mother in Pinebrooke. But when night falls, something else takes control-something cruel, something that laughs through a cracked mask. The town calls him Crimson Smile. Carter doesn't remember the killings. He doesn't want to. But as the murders creep closer to home and his mother begins to suspect the truth, the line between who he is and what he's becoming starts to shatter. The monster isn't coming for him. It's becoming him.