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."
- Type
- Film
- Status
- Released
- Release
- October 17, 1997
- Language
- English
- Origin
- United States
- Genres
- Teen Horror · Slasher
- Production companies
- Mandalay Entertainment · Original Film · Summer Knowledge LLC
- Runtime
- 1h 41m
- Rating
- TV-14