I Know What You Did Last Summer

After four teenagers cause a fatal hit-and-run, they agree to conceal what happened and try to resume their lives. A year later, Julie receives an anonymous message stating that someone knows their secret. Threats and attacks force Julie, Ray, Helen, and Barry to reconsider the night of the accident, the promises they made, and who might want revenge. Lois Duncan's 1973 suspense novel follows their attempt to identify the person watching them before the consequences become deadly. The book became the basis for multiple screen adaptations and a long-running horror franchise.