Tess Thorne, a revered mystery writer, faces a long drive home following a book-signing engagement. Tess takes a shortcut at the suggestion of the event's planner, but while driving on a particularly lonely stretch of New England road, a tire blows out, leaving Tess stranded. Relieved when another driver stops and offers assistance, Tess quickly discovers her savior is actually her assailant, a serial killer. Left for dead in a drainage pipe to rot with the bodies of his other victims, Tess escapes and makes her way home. With her fragile mind beginning to unravel, she is determined to find her rapist and have her revenge.