![Red Water](https://image.tmdb.org/t/p/w185/uezeMaxUfqhKzHU4JkqpSSHI639.jpg)
After four high school friends are involved in a hit-and-run road accident, they dispose of the body and vow to keep the incident a secret. A year later, they each start receiving anonymous letters bearing the warning “I Know What You Did Last Summer.”