Dr. Maura Isles travels to a medical conference in winter Wyoming. There she meets a sexy former classmate, Douglas Comley. Deciding to rest and unwind from her unhealthy relationship with Reverend Daniel Brophy, the woman goes skiing with Doug, his daughter Grace and their friends Arlo and Elaine. The wrong road and a snowstorm trap them in deserted forests in the cold. The company discovers a small village in the valley, founded by followers of a religious cult led by a certain Prophet Jeremiah Hood. But there are no people in the houses, food is left untouched on the tables, cars are abandoned in garages, there is no electricity, mobile communications or radio. Where have all these people gone? Maura and her companions are in mortal danger. At this time, Jane Rizzoli and Gabriel Dean travel to Wyoming in search of their missing friend.