"I Know What You Did Last Summer" is a 1997 horror film directed by Jim Gillespie. The story follows four teenagers—Julie James, Ray Bronson, Helen Shivers, and Barry Cox—who accidentally hit a man with their car and decide to cover it up. A year later, they begin receiving mysterious messages from someone who knows their secret. As the group is stalked by a masked killer, they must confront their past actions and the consequences of their choices. The film explores themes of guilt, friendship, and the impact of secrets, making it a classic in the slasher genre.