A family is hunted by a centuries-old monster: a man with a relentless obsession who can take on any identity. The String Diaries opens with Hannah frantically driving through the night -- her daughter asleep in the back, her husband bleeding out in the seat beside her. In the trunk of the car rests a cache of diaries dating back 200 years, tied and retied with strings through generations. The diaries carry the rules for survival...