The Sinner - T. Gerritsen

Bantam: Within the walls of a cloistered convent, a scene of unspeakable carnage is discovered. On the snow lie two nuns, one dead, one critically injured - victims of a seemingly motiveless, brutally savage attack.

Medical examiner Maura Isles' autopsy of the murder victim yields a shocking surprise, but the case takes a disturbing twist. The body of another woman has been found. And someone has gone to a lot trouble to remove her face, hands and feet.

As long buried secrets are revealed so Dr Isles and homicide detective Jane Rizzoli, find themselves part of an investigation tha