Released on October 17, 1997, I Know What You Did Last Summer became an iconic slasher film that defined a generation of horror fans. Directed by Jim Gillespie and written by Kevin Williamson (best known for Scream), the movie stars Jennifer Love Hewitt, Sarah Michelle Gellar, Ryan Phillippe, and Freddie Prinze Jr.. Its success catapulted these young actors into stardom, solidifying the film’s place as a key player in the late ‘90s slasher revival.
The film follows a group of four friends who accidentally hit and kill a pedestrian on a dark, coastal road. In a panic, they decide to dispose of the body and keep the accident a secret. However, a year later, they begin receiving ominous messages stating, “I know what you did last summer,” and are stalked by a mysterious figure wielding a hook. The group is terrorized one by one as they try to uncover the identity of their tormentor while grappling with the guilt of their actions.
With a modest budget of $17 million, I Know What You Did Last Summer delivered a box office smash, grossing over $125 million worldwide. Much of the budget was spent on the film’s young, attractive cast, who were rising stars at the time, as well as the film’s coastal setting, which gave it a distinct, atmospheric vibe. Unlike big-budget blockbusters, the film thrived on suspense, tension, and character-driven horror rather than expensive special effects or elaborate set pieces.
The film’s success can largely be attributed to the screenplay by Kevin Williamson, who was riding high after his massive success with Scream (1996). His ability to mix slasher elements with teenage drama and mystery resonated with audiences. Additionally, the film’s marketing campaign cleverly played up the mystery of the killer’s identity, drawing viewers into the cinemas.
Jennifer Love Hewitt’s performance as the “final girl” Julie James became iconic, and Sarah Michelle Gellar, already a fan favorite from Buffy the Vampire Slayer, added to the movie’s star appeal. The film’s mix of teen angst, jump scares, and a catchy premise made it a box-office hit and a cult favorite. Its commercial success spawned two sequels, keeping the legacy of I Know What You Did Last Summer alive for years to come.
