First, you wear it ... then it wears you. When forty-two-year-old bus driver Mark Devold inherits his late grandfather's home in rural Galesburg, Illinois, he's forced to revisit painful memories of his childhood and the brutal, unspeakable crime for which his Uncle Tony has been sentenced to life in prison. With his mother Audrey in an assisted living facility and his sister Ann living abroad, Mark lives a quiet life tempered by alcohol. Then Mark discovers a homemade Halloween costume among the old house's many effects-a grotesque body cast that calls to mind memories of trick-or-treating and days long past. At first, the thing appears to be little more than a creepy curiosity, but soon, Mark discovers it exerts some strange influence over everything around it: his house, his family, and even his memories. As reality and hallucinatory fantasy become harder to separate, Mark uncovers a terrifying secret about the costume-one that could cost him everything.