From master storyteller Stephen King comes a thrilling new novel with intertwining storylines - one about a killer on a diabolical revenge mission, and another about a vigilante targeting a feminist celebrity speaker - featuring the beloved Holly Gibney and a dynamic new cast of characters.

When the Buckeye City Police Department receives a disturbing letter from a person threatening to 'kill thirteen innocents and one guilty' in 'an act of atonement for the needless death of an innocent man', Detective Izzy Jaynes has no idea what to think. Are fourteen citizens about to be slaughtered in an unhinged act of retribution? As the investigation unfolds, Izzy realises that the letter writer is deadly serious, and she turns to her friend Holly Gibney for help.