In one Halloween obsessed Midwestern town, everyone's on red alert after a local politician goes missing. Little do they know it's only the beginning.

It's been close to twenty years since forensic pathologist Dolores Hawthorne left her hometown of Little Horton, Wisconsin. The town is famous for its Halloween celebrations, but also its history of violent deaths linked to the holiday. To Dolores, it's the place she fled, family, bad memories, and all. Until the FBI calls to tell her that her father--the former mayor turned US Senator--is missing under mysterious circumstances.

Some people count to ten to wake up from a nightmare. Dolores always counts the bones of her head instead: sphenoid, frontal, lacrimal. But no matter how many times she counts them, it doesn't change the fact that her father is missing, that his final words of warning to her were to trust no one, and that now, the rest of her family is giving Dolores a chilling welcome. With Halloween fast approaching, Dolores must face the past she left behind before it's too late.