It is a beautiful spring day in the quiet woods of the FBI's headquarters at Quantico, forensic anthropologist, Dr Temperance Brennan, is teaching a body recovery course when she is urgently called back to Quebec A gruesome duty awaits her a biker war is raging and two of the foot soldiers have blown themselves up The only person qualified to make sense of what remains is Tempe When the body of a nine-year-old girl is wheeled into the morgue - slain in biker crossfire - Tempe vows to lend her skills to fight his evil, and enters the dark underworld of the bikers