A DEAD WOMAN FOUND IN THE WOODS. A TATTOO OBSESSED KILLER. A DETECTIVE WITH A HORRIFIC CHOICE TO MAKE.The body of a young woman is found naked and strangled in Ham Woods. On her back is a recently tattooed image of a beautiful and intricate butterfly. DCI Peter Moone suspects this is only the beginning.When another tattooed body is discovered, Moone and acting DI Mandy Butler begin to track down a killer who keeps his victims locked up for months before he tattoos them and releases them into the darkness.Moone and Butler also learn that their new boss has been murdered. It comes as no surprise when they discover the main suspect is career hungry DS Faith Carthew. They just can't prove she did it.As both investigations deepen, they struggle to prove Carthew's guilt and find themselves in a race against time to track down the butterfly killer before he marks and executes more victims.But when Moone comes face to face with the killer, he is confronted with the most harrowing decision of his career...