When a young woman's body is found on the shore of the Niagara River, she has the identical purple marks on her wrists and ankles as two other bodies recently discovered in the same area. With summer just around the corner and tourist season soon at its peak, local police detectives Charles Richmond and Sarah Child know they have to find a ruthless killer before he strikes again. Unfortunately, clues are sparse. Charles decides to put his neck on the line and enlist the help of Grace Bardo, the local fortune teller-hoping she can provide some insight into the case. But after another girl is kidnapped and killed a month later, the police are no further in their investigation. Meanwhile, Grace and Charles are embroiled in a passionate and unexpected romance, but everything is about to be turned upside down when Charles's partner, Sarah, suddenly disappears. Grace knows she has to do something. Against her new boyfriend's wishes, Grace summons the help of two friends and a few of colorful locals as she embarks on a dangerous journey to find a serial killer desperate for the taste of blood.