FRACTURED (The Rook Maison Series) by Brian Blackwood

Rook Maison is a serial killer.

He is a body snatcher. He kills by taking over the bodies of his victims, leaving no blood or weapons at the scene of the crimes. Disillusioned by the loss of his Catholic faith, Rook seeks answers to his unique ability and finds that heaven and hell are not what he was taught to believe. Now, in their way, angels and demons seek to head off the calamity that Rook is quickly becoming because for each body he takes and each soul he breaks, he is becoming more and more FRACTURED.