Fen Dexter's quiet life on the idyllic California coast is interrupted one stormy night when a blood-covered man shows up on her doorstep claiming to have had a car accident. He tells her that he is on his way to San Francisco to help the police solve the murder of his fiancee. Unable to make it to the hospital because of the storm, he spends the night at Fen's. Who is this man, really? And what does he want with Fen and her family?