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I Know What You Did Last Summer2025

R Horror Slasher 1h 51m

When five friends inadvertently cause a deadly car accident, they cover up their involvement and make a pact to keep it a secret rather than face the consequences. One year later, the past comes back to haunt them as they learn someone knows what they did last summer. Stalked by a mysterious killer, they seek help from two survivors of the legendary Southport massacre of 1997.

About the Film

One Secret, One Year Later, One Killer Who Remembers

When five friends inadvertently cause a deadly car accident on a late-night drive, they cover up their involvement and make a pact to keep it buried rather than face the consequences. A year later, their past comes back to haunt them: someone knows what they did, and they're being hunted by a hook-wielding killer with a score to settle. Desperate for answers, the group seeks out Julie James and Ray Bronson, two survivors of the legendary Southport massacre of 1997, whose own encounter with a killer just like this one may be the only thing that can save them.

Director Jennifer Kaytin Robinson
Release Year 2025
Language English
Country United States
Genre
Horror Slasher Mystery
Starring

Cast

Madelyn Cline
Madelyn Cline
Danica Richards
Chase Sui Wonders
Chase Sui Wonders
Ava Brucks
Jonah Hauer-King
Jonah Hauer-King
Milo Griffin
Jennifer Love Hewitt
Jennifer Love Hewitt
Julie James
Freddie Prinze Jr.
Freddie Prinze Jr.
Ray Bronson
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Verified Information

Cinelux Editorial Standards: This I Know What You Did Last Summer film page contains verified information sourced from official production records, IMDb, and Rotten Tomatoes. We confirm the director (Jennifer Kaytin Robinson, co-writer Sam Lansky), cast members (Madelyn Cline, Chase Sui Wonders, Jonah Hauer-King, Tyriq Withers, with Jennifer Love Hewitt and Freddie Prinze Jr. reprising their original roles), release year (2025), runtime (111 minutes), and production country (United States). Our team has cross-referenced the film's place as the fourth installment in the franchise, its direct connection to I Still Know What You Did Last Summer (1998), and cast accuracy as a Sony/Columbia Pictures slasher. Every detail is fact-checked for streaming audiences.

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Good to Know

Frequently Asked Questions

It's a legacy sequel — the fourth installment in the franchise, set 27 years after the events of I Still Know What You Did Last Summer (1998), with Jennifer Love Hewitt and Freddie Prinze Jr. reprising their original roles alongside a new cast of friends targeted by a new hook-wielding killer.

The film was directed by Jennifer Kaytin Robinson, who co-wrote it with Sam Lansky, and stars Madelyn Cline, Chase Sui Wonders, Jonah Hauer-King, and Tyriq Withers, with Jennifer Love Hewitt and Freddie Prinze Jr. returning as Julie James and Ray Bronson.

I Know What You Did Last Summer (2025) is rated R and runs approximately 1 hour and 51 minutes.

It helps but isn't required — the film is a direct sequel to I Still Know What You Did Last Summer (1998) and references the Southport massacre from the earlier films, though it's built to work for newcomers too.