Temperance Brennan life is devoted to the dead.
Temperance live in North Carolina and in Montereol where she is working with bones. So she travels between USA and Canada all te time.
In Montereal a woman is found and she detects a pattern and soon she is hunting a killer there are killing woman. Her best friend is working with workinng girls and she is scared and soon she disappear Temperance beginning to fear for her own life.
So the police and Temperance are working against time to get a very dangerous killer.