Emerging criminal defense attorney Sam Young has always known he had a gift. Or a curse. He thinks of them as minor psychic abilities. When Sam is hired by an attractive young nun named Camille Paradisi, he agrees to help discover the identity of a serial killer in order to prevent Camille's pastor from being exposed for not reporting the man after a confession - thereby allowing another murder to occur. While Sam's psychic abilities increase as he investigates the case and gets closer to Camille, he realizes that the enigmatic nun is not revealing the complete truth.
Camille shares an old journal anonymously mailed to the church, which she believes may have been authored by the killer/confessor. The journal, which begins in Argentina in the 1940's, purports to tell the life story of a man with mind control and other special powers who claims to be a descendant of the fallen angels cast out of heaven by God. As Sam learns more about the murders, the journal author, and Camille, he begins to realize the so called "Rosslyn Ripper" case may have ancient implications beyond his imagination.