A stranger brutally attacks two young women in a park in Portland, Texas. One victim is killed, while the other, miraculously survives. With the help of the survivor, investigators desperately hunt for the killer before he can strike again.
When Lisa Fein disappears from her rural Michigan home, her young son tells police he saw her being attacked by a man in a snowmobile helmet. After a three-day search, Lisa's body is found in a shallow grave. Police set their sights on three people.