Brennan is called back to Montréal, Quebec, Canada from teaching at the FBI Academy in Quantico when a biker gang war turns violent.

Excavating at a biker clubhouse reveals the bones of a young girl from Myrtle Beach, South Carolina.

Brennan has herself assigned to work with Operation Carcajou, a multijurisdictional task force created to investigate criminal activities among outlaw motorcycle gangs in the Province of Quebec.

Can Brennan find out how the girl's remains ended up in Montreal, help to bring the killers to justice, and keep Kit away from involvement with the biker gangs?

Kim Bunce said that the dialogue of the novel, "provided the charmingly American-accented Katherine Borowitz with a fine script that allows the listener to become heavily engrossed in the complicated plot without losing it.