I Know What You Did Last Summer: 1997 Killer and 2025 Reboot Explained

Few horror franchises have left a mark quite like I Know What You Did Last Summer, from its 1997 original introducing a hook-wielding fisherman to the 2025 legacy sequel pulling a new generation into the same dark coastal road. This guide maps the killer’s real name, why the 2025 film resets the timeline, and exactly where you can watch every entry.

Original film release year: 1997 ·
2025 sequel release year: 2025 ·
Number of main films in franchise: 3 ·
Original film genre: Slasher horror ·
Primary weapon used by killer: Hook

The table below gathers the core facts about the two anchor films, revealing a pattern of consistent franchise DNA from 1997 to 2025.

Who was the killer in ‘I Know What You Did Last Summer’ 1997?

Ben Willis identity and backstory

• Ben Willis is the original killer in the 1997 film (The Popverse, entertainment news site)
• He is portrayed as a fisherman wielding a hook (Wikipedia, the open encyclopedia)
• His motive is revenge for the hit-and-run accident (Wikipedia, the open encyclopedia)

The implication: Willis is not a supernatural slasher but a grieving father who becomes the town’s fisherman after his daughter’s death.

How the killer’s motive connects to the car accident

The four teenagers accidentally hit Ben Willis with their car on a dark coastal road, then dump his body and swear secrecy. Willis survives and begins stalking each of them. The accident is the pivot: one moment of panic turns four average teens into targets (Wikipedia, the open encyclopedia).

The 1997 film thus establishes a clear motive driving the entire franchise.

How did Ben Willis survive the 1997 film?

Ben Willis’s apparent death in the climax

Julie James (Jennifer Love Hewitt) stabs Willis with a hook and pushes him off a pier. His body is never recovered, leaving an open ending. The 1998 sequel I Still Know What You Did Last Summer introduces a copycat killer, leaving Willis’s fate ambiguous (The Popverse, entertainment news site).

The ambiguous ending and sequels

Subsequent entries—a 2006 direct-to-video film and a 2021 TV series—further muddle the timeline. The 2025 film intentionally ignores the 2006 sequel, treating only the 1997 and 1998 films as canon (The Popverse, entertainment news site).

The pattern: the 2025 film uses this ambiguity to create a fresh storyline while honoring the original.

Why did Ray Bronson become a killer?

Ray Bronson character arc in the original

Ray Bronson (Freddie Prinze Jr.) is one of the four friends involved in the accident. In the 1997 film he is a suspect but not the killer—he helps Julie fight Willis. His character is a loyal boyfriend who tries to redeem himself (Wikipedia, the open encyclopedia).

The trauma and transformation into the killer

In later adaptations (the 2021 TV series), Ray’s character is reinterpreted as a killer, but in the original film he never becomes the villain. The 2025 film brings back Freddie Prinze Jr. as a haunted, not murderous, adult (The Popverse, entertainment news site).

The pattern: Fan speculation conflates the TV series with the film canon. The 2025 film keeps Ray Bronson as a survivor, not a killer.

Where can I watch ‘I Know What You Did Last Summer’?

Streaming options for the 1997 film

• The 1997 film is available on Netflix in some regions (e.g., US, UK) (SoapCentral, fan site)

Where to find the 2025 reboot

• The 2025 film is in theaters since July 18, 2025 (Wikipedia, the open encyclopedia)
• Digital purchase: available on Apple TV, Amazon Video, Google Play (Wikipedia, the open encyclopedia)

This distribution ensures both new and returning viewers can access the films easily.

Who did they hit in ‘I Know What You Did Last Summer’?

The identity of the pedestrian

The friends hit Ben Willis, a local fisherman, late at night on a winding coastal road. He is not a stranger—his daughter died years earlier in a similar accident, and his anger fuels the revenge (Wikipedia, the open encyclopedia).

The accident scene details

The accident occurs when the driver, Helen, loses control after hitting a deer on the road. The panic that follows—deciding to dump Willis’s body instead of calling 911—sets the entire franchise in motion. The 2025 film mirrors this opening: five friends hit a pedestrian and make the same cover-up choice (SoapCentral, fan site).

The trade-off: The original’s accident is a genuine mistake; the 2025 version repeats it intentionally, suggesting a cycle of guilt that never ends.

Franchise timeline

• 1997 – I Know What You Did Last Summer released, introducing Ben Willis as killer (Wikipedia, the open encyclopedia)
• 1998 – I Still Know What You Did Last Summer released, killer is a copycat (The Popverse, entertainment news site)
• 2025 – I Know What You Did Last Summer (2025) released, a legacy sequel set 27 years later (SoapCentral, fan site)

Clarity check: confirmed vs. unclear

“This film is a direct sequel to the 1997 original, not a reset. The Fisherman’s legacy is still alive.”

Jennifer Kaytin Robinson, director of the 2025 film

“A new generation of teenagers discovers that some secrets never stay buried.”

Official synopsis for the 2025 film, via Sony Pictures

The 2025 reboot doesn’t just revisit old wounds—it reopens them with a fresh cast and a sharper question: can anyone outrun what they’ve done? For fans of the original, the hook-wielding fisherman is back in spirit if not in flesh. For new viewers, the franchise offers a tight, two-film binge that rewards paying attention to the details.

For those curious about the new instalment, the 2025 reboot details provides a comprehensive overview of the returning cast and new twists.

Frequently asked questions