Every day Christine wakes up not knowing where she is. Her memories disappear every time she falls asleep. Her husband, Ben, is a stranger to her, and he's obligated to explain their life together on a daily basis--all the result of a mysterious accident that made Christine an amnesiac. With the encouragement of her doctor, Christine starts a journal to help jog her memory every day. One morning, she opens it and sees that she's written three unexpected and terrifying words: "Don't trust Ben." Suddenly everything her husband has told her falls under suspicion. What kind of accident caused her condition? Who can she trust? Why is Ben lying to her?