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.

After the Buckeye City Police Department receives a disturbing letter from a person who is threatening to kill 'thirteen innocents and one guilty' in an act of retribution, Detective Izzy Jaynes turns to her friend Holly Gibney of the Finders Keepers Agency for help.

Meanwhile, outspoken activist Kate McKay is embarking on a lecture tour. But someone has started disrupting her events, and Holly is hired to be Kate's bodyguard.

In a feat of storytelling only Stephen King could pull off, these twinned narratives converge in a chilling and spectacular conclusion.