When Detective Dave Robicheaux's daughter Alafair declares her intention to interview a convicted serial killer called Asa Surette in his Kansas prison cell he does all he can to dissuade her. Dave has always encouraged her ambitions as a writer but as a father he doesn't want her to be exposed to a man so nakedly evil. & his fears seem well founded when Alafair is visibly shocked by the encounter. Two years later the horror Surette evoked is all but forgotten as Dave his wife Molly & Alafair are vacationing amidst the natural beauty of Montana. But evil it seems has followed them into this wild paradise. Someone is stalking Alafair & Dave begins to suspect that it's Surette
- even though he officially died when the prison truck he was being transported in collided with an oil tanker. Is Alafair now the target of one of the most depraved serial killers ever to have been caught or has she unwittingly crossed paths with a murderous psychopath closer to home?