A retired Arizona cop, Scott Riker, lives with his wife and daughter in Quebec City where he heads a group of problem-solvers. Directed by Quebec business mogul and philanthropist, Luc Duchesne, the group uses their talents and resources to stand between people in trouble and the criminal elements who would do them harm. In Her Book of Shadows, Riker agrees to find a teenage girl, Jodie Burke, whose parents say ran away to Quebec City from Connecticut. When Jodie's friend turns up murdered on the Plains of Abraham, however, it becomes clear that Riker faces something more than just a runaway girl. He races to find Jodie and prevent whoever is trying to kill her from succeeding.