The cast of "I Know What You Did Last Summer" varies depending on the version: 1997 Original Film Cast:
- Jennifer Love Hewitt as Julie James
- Sarah Michelle Gellar as Helen Shivers
- Ryan Phillippe as Barry Cox
- Freddie Prinze Jr. as Ray Bronson
- Johnny Galecki as Max Neurick
- Bridgette Wilson as Elsa Shivers
- Anne Heche as Melissa "Missy" Egan
- Muse Watson as Benjamin "Ben" Willis / the Fisherman
2025 Remake Cast:
- Madelyn Cline as Danica
- Chase Sui Wonders as Ava
- Jonah Hauer-King as Milo
- Tyriq Withers as Teddy
- Sarah Pidgeon as Stevie
- Gabbriette Bechtel as Tyler
- Lola Tung
- Nicholas Alexander Chavez
- Austin Nichols
- Billy Campbell
- Jennifer Love Hewitt reprising her role as Julie James
- Freddie Prinze Jr. reprising his role as Ray Bronson
This new version features a mix of new actors alongside original stars Jennifer Love Hewitt and Freddie Prinze Jr., who return to support the new generation of characters. The story follows five friends who cover up a deadly accident and are later stalked by a vengeful killer, with the original survivors helping them survive
