I've Got You Under My Skin by Mary Higgins Clark
When Laurie Moran's husband was brutally murdered, only three-year-old Timmy saw the face of his father's killer. Five years later his piercing blue eyes still haunt Timmy's dreams. Laurie is haunted by more: the killer's threat to her son as he fled the scene: Tell your mother she's next, then it's your turn . . .
