After three murders, they call you a serial killer.
But what do you call a man after ninety-three?

Crime journalist Elara Vance has spent her life hunting the one man Iceland fears even in its darkest hours; the invisible executioner known only as Vapor.

When a contract is placed on her life, Vapor arrives, not to kill her, but to claim her. Abducted beneath the frozen earth into his bunker, where he experiments, mutilates, and perfects the art of untraceable death, Elara becomes the one thing Vapor never meant to keep alive.
He feeds her, dresses her, tends her wounds with the same hands he uses to cut men apart. He forces her to listen while he kills. Forces her to watch when he wants her educated. Forces her to write his story in the dark with his fingers on her pulse.

In the polar night of Iceland, where twenty hours of darkness hides every sin, a journalist will meet her monster — and write her own ending.