100 mins | 1997-10-17
Horror Thriller Mystery
As they celebrate their high school graduation, four friends are involved in a hit-and-run accident when their car hits and apparently kills a pedestrian on an isolated roadway. They dispose of the body and vow to keep the incident a secret, a year later somebody starts sending them letters bearing the warning "I Know What You Did Last Summer."
"If you're going to bury the truth, make sure it stays buried."