When Cass Anderson takes a shortcut home during a violent storm, she notices a woman sitting alone in a car. She hesitates, drives on—and the next day learns the woman was murdered.
Consumed by guilt, Cass begins forgetting things, misplacing items, and questioning her own sanity. Then the silent phone calls start. As fear and paranoia take hold, she can no longer trust her own mind—or the people closest to her. But someone knows the truth about that night, and they're determined to make sure Cass never uncovers it.
