Skinjumper

Rose Bennett, a young, recently-widowed mother, comes face to face with a newly-minted murderer and learns that there are much scarier things than raising a child alone in an unfamiliar town. Terry Miller has discovered three things in a very short amount of time: his high school sweetheart's been cheating on him with his father, killing is fun, and if he does it just right, he can switch bodies with his victims.