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Horror film

I Know What You Did Last Summer (2025): Cast, Ratings & Box Office

I Know What You Did Last Summer (2025) movie poster

I Know What You Did Last Summer is a 2025 horror film directed by Jennifer Kaytin Robinson, starring Madelyn Cline as Danica Richards, Jonah Hauer-King and Tyriq Withers. It runs 1 hour 51 minutes and earned $64.8 million worldwide on a $18 million budget. Critics gave it 36% on Rotten Tomatoes and 42 on Metacritic, and IMDb users rate it 5.1/10.

IMDb rating
5.1/10
Rotten Tomatoes
36%
worldwide gross
$64.8M
Echo Score
47
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I Know What You Did Last Summer (2025) movie poster
Released
Runtime
1h 51m (111 min)
Genre
Horror
Original language
English
Budget
$18M
After the credits
Yes Extra scene during or after the credits
The story

What Is I Know What You Did Last Summer About?

The premise of I Know What You Did Last Summer without spoilers. The whole story and the ending explained are in the plot summary further down.

After a fatal car accident, a group of friends makes a desperate decision to conceal their involvement and keep a dark secret. A year passes, and they are suddenly terrorized by an anonymous figure who knows their secret and seeks vengeance. As they struggle to uncover the stalker’s identity, they must confront their past and face the terrifying consequences of their actions.

I Know What You Did Last Summer Themes & Keywords

· 27 tags
  • slasher horror
  • fourth part
  • reboot
  • sequel
  • requel
  • male nudity
  • slasher
  • whodunit
  • murder mystery
  • whodunnit mystery
  • summer
  • stalker
+15 more
  • fear
  • murder
  • axe
  • wilding
  • hook
  • hobo
  • body
  • party
  • accident
  • car
  • crash
  • fishermen
  • car accident
  • blood
  • psychotronic film
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Cast & crew

I Know What You Did Last Summer Cast & Characters

Madelyn Cline leads the cast as Danica Richards, with Jonah Hauer-King as Milo Griffin and Tyriq Withers as Teddy Spencer. Directed by Jennifer Kaytin Robinson; 20 actors are credited in all.

Also Starring in I Know What You Did Last Summer

· 16 more
From the director

More from Jennifer Kaytin Robinson

More films directed by Jennifer Kaytin Robinson, best-rated first: Do Revenge and Someone Great.

Full filmography
Ratings

I Know What You Did Last Summer Reviews & Ratings

Critics gave I Know What You Did Last Summer 36% on Rotten Tomatoes and 42 on Metacritic, and IMDb users rate it 5.1/10. Our Echo Score gives it 47/100, strongest in sensory experience (55) and weakest in art & craft (40).

47 /100

I Know What You Did Last Summer Echo Score Breakdown

In overall terms, I Know What You Did Last Summer delivers a mixed slasher experience that trades novelty for nostalgia. The film’s visual execution and occasional burst of practical gore reflect competent craftsmanship, but the recycled plot and underdeveloped characters limit its impact. Pacing alternates between engaging set pieces and predictable sequences, while the soundtrack and sound design add moments of tension amidst familiar tropes. Ultimately, the reboot offers modest thrills for devoted fans but lacks the fresh identity to sustain broader interest.

Our own 0–100 rating, built from five aspects: art, character, story, the sensory experience and how well a film rewatches.

  • Art & Craft 40

    In terms of art & craft, the film shows steady practical effects and functional set design, though it leans on familiar slasher visuals. Direction employs conventional framing, and editing patterns often prioritize efficient kills over stylistic experimentation. While the gore sequences display measured execution, the production design and cinematography rarely stand out. Overall, the visual craftsmanship feels serviceable but lacks a distinctive flair.

  • Character & Emotion 45

    When it comes to character & emotion, the reboot struggles to establish depth across its leading ensemble, with many new figures feeling generic. A handful of legacy cast members lend credibility, yet their brief appearances underscore the limited chemistry among newer roles. Despite occasional moments of earnest performance, emotional resonance remains shallow. Overall, character development feels uneven and underexplored.

  • Story & Flow 50

    In terms of story & flow, the plot adheres closely to the original’s formula, delivering predictable twists with minimal innovation. Pacing alternates between brisk slasher set pieces and slower, expositional segments that impede engagement. While the sequence of reveals offers sporadic tension, coherence suffers from underwritten motivations and uneven escalation. Overall, the narrative framework feels recycled and lacks fresh momentum.

  • Sensory Experience 55

    When considering the sensory experience, the film balances realistic gore effects with a restrained soundtrack that supports tension sporadically. Sound design is competent but often underutilized, leaving jump scares to rely heavily on visual shocks. The visual style employs an understated color palette consistent with its ’90s roots, yet it seldom ventures into memorable stylistic territory. Overall, sensory elements deliver moderate impact without sustained immersion.

  • Rewatch Factor 45

    In terms of rewatch factor, the movie offers limited replay value beyond its core fanbase of genre enthusiasts. Familiar kills and recurring nods to earlier installments provide brief amusement for viewers seeking nostalgia, but the lack of narrative surprises reduces incentives for multiple viewings. While certain set pieces may entertain once more, the film’s reliance on well-trodden tropes undermines long-term appeal. Overall, it remains a modest one-time experience.

Plot

I Know What You Did Last Summer Plot Summary & Ending Explained

What happens in I Know What You Did Last Summer from start to finish, spoilers included, with a timeline of 12 key events and the ending explained. The opening is below; the full summary is a 4-minute read.

Spoilers ahead

On the 4th of July, Ava Brucks returns to her small hometown of Southport, North Carolina, to attend her friend Danica Richards’s engagement party. The celebration marks a joyful occasion, but the day takes a dark turn when Ava, Danica, her ex-boyfriend Milo Griffin, and Danica’s fiancé Teddy Spencer decide to drive out to a scenic cliffside to watch the fireworks. During the drive, they invite their former friend Stevie Ward, who had recently completed drug rehab, to join them.

Full summary

The whole story of I Know What You Did Last Summer, scene by scene, with the ending explained

Read the full summary
Box office

I Know What You Did Last Summer Box Office & Budget

I Know What You Did Last Summer grossed $64.8 million worldwide on a $18 million budget, 3.6 times what it cost. $32.2 million came from the US and Canada and $32.6 million (50%) from the rest of the world.

2025 box office

Worldwide gross

$64.8M

3.6× its budget

US & Canada
$32.2M
International
$32.6M
Budget
$18M
US & Canada 50% Rest of the world 50%
Videos

I Know What You Did Last Summer Trailers & Videos

13 videos: 3 trailers, 3 teasers, 1 clip, 5 featurettes and 1 behind-the-scenes video.

All 13 videos
Official Trailer
  • Trailer what are you waiting for? watch the trailer now.
  • Trailer New Trailer
  • Teaser Trailer Tomorrow
  • Teaser what are you waiting for? book your tickets to see I Know What You Did Last Summer
Quiz

How Well Do You Know I Know What You Did Last Summer?

10 questions about the story, each with a hint if you get stuck. Pick an answer to see whether you were right.

Question 1 of 10

  1. Question 1: not answered
  2. Question 2: not answered
  3. Question 3: not answered
  4. Question 4: not answered
  5. Question 5: not answered
  6. Question 6: not answered
  7. Question 7: not answered
  8. Question 8: not answered
  9. Question 9: not answered
  10. Question 10: not answered

What year does the movie 'I Know What You Did Last Summer' primarily take place?

Cars

Cars in I Know What You Did Last Summer

20 cars on screen, including the 2014 BMW X5 F15 and the 1998 Dodge Ram.

All 20 cars
  • 2014 BMW X5 F15 in I Know What You Did Last Summer 2014 BMW X5 F15 Important role
  • 1998 Dodge Ram in I Know What You Did Last Summer 1998 Dodge Ram Important role
  • 2002 Mercedes-Benz G 500 W463 in I Know What You Did Last Summer 2002 Mercedes-Benz G 500 W463 Important role
  • Ford F-Series in I Know What You Did Last Summer Ford F-Series Minor role
Details

I Know What You Did Last Summer Also Known As

33 alternative titles, including “Souviens-toi... l'été dernier” and “Nikada ne zaboravljam što si radila prošlog ljeta”.

Also known as
  • Souviens-toi... l'été dernier
  • Nikada ne zaboravljam što si radila prošlog ljeta
  • Eu Sei O Que Vocês Fizeram No Verão Passado
  • Le Pacte du silence
  • 나는 네가 지난 여름에 한 일을 알고 있다
  • Souviens-toi… l'été dernier
  • Geçen Yaz Ne Yaptığını Biliyorum
  • Sé lo que hicisteis el último verano
  • Sei O Que Fizeste No Verão Passado
  • 我永远忘不了你去年夏天做了什么
  • Znam što si radila prošlog ljeta
  • Mùa Hè Kinh Hãi
+21 more
  • Viem, čo ste robili minulé leto
  • Tiedän mitä teit viime kesänä
  • Ich weiß, was du letzten Sommer getan hast
  • So cosa hai fatto
  • Es zinu, ko jūs izdarījāt pagājušajā vasarā
  • Я знаю, що ви скоїли минулого літа
  • Eelmise suve saladus
  • Tudom, mit tettél tavaly nyáron
  • אני יודע מה עשית בקיץ האחרון
  • Sé lo que hicieron el verano pasado
  • 舊年暑假搞乜鬼
  • ซัมเมอร์สยอง...ต้องหวีด
  • Ich weiss, was du letzten Sommer getan hast
  • Знам какво направи миналото лято
  • Я знаю, что вы сделали прошлым летом
  • 是誰搞的鬼, მე ვიცი რა ჩაიდინეთ წინა ზაფხულს
  • Ξέρω τι κάνατε πέρσι το καλοκαίρι
  • Koszmar minionego lata
  • Žinau, ką padarei aną vasarą
  • أعلم ما فعلته الصيف الماضي
  • أعرف ما فعلته الصيف الماضي

Seen I Know What You Did Last Summer?

FAQ

I Know What You Did Last Summer FAQ: Cast & Box Office

Runtime, release date, director, cast, box office, ratings and post-credit scenes of I Know What You Did Last Summer, each answered in a sentence.

How long is I Know What You Did Last Summer?

I Know What You Did Last Summer runs 1 hour 51 minutes (111 minutes).

When was I Know What You Did Last Summer released?

I Know What You Did Last Summer was released on July 18, 2025.

Who directed I Know What You Did Last Summer?

I Know What You Did Last Summer was directed by Jennifer Kaytin Robinson.

More films by Jennifer Kaytin Robinson

Who is in the cast of I Know What You Did Last Summer?

I Know What You Did Last Summer stars Madelyn Cline as Danica Richards, Jonah Hauer-King as Milo Griffin and Tyriq Withers as Teddy Spencer, among 20 credited actors.

How much did I Know What You Did Last Summer make at the box office?

I Know What You Did Last Summer grossed $64.8 million worldwide ($32.2 million domestic, $32.6 million international) on a budget of $18 million.

How is I Know What You Did Last Summer rated?

I Know What You Did Last Summer has 5.1/10 on IMDb, 36% on Rotten Tomatoes, 42 on Metacritic and 56% on TMDB.

Does I Know What You Did Last Summer have a post-credit scene?

Yes. I Know What You Did Last Summer has an extra scene during or after the credits, so it is worth staying seated.

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