Memories—real, false, and a bit of both—are at the heart of British author Watson's haunting, twisted debut. Christine Lucas awakens each morning in London with no idea who she is or why she's in bed with a strange man, until he tells her that his name is Ben and they've been married for 22 years. Slowly, Christine learns that she has amnesia and is unable to remember her past or retain new memories: every night when she falls asleep, the slate is wiped clean. Dr. Nash, her therapist, has encouraged her to write in a journal that she keeps secret from Ben. Christine realizes how truly tangled—and dangerous—her life is after she sees the words "don't trust Ben" written in her journal, whose contents reveal that the only person she can trust is herself. Watson handles what could have turned into a cheap narrative gimmick brilliantly, building to a chillingly unexpected climax.