'They want us to know why they died...'

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.

Dr 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 of trouble to remove her face, hands and feet.

As long buried secrets are uncovered, Dr Isles and detective Jane Rizzoli, find themselves part of a terrifying investigation that leads to a chilling realisation of the killer’s identity…