I Know What You Did Last Summer

  • 2025
  • R
  • 111m
movieMx RATING
5.7/10629
VERDICT
ABOVE AVERAGE
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Performance & Direction: I Know What You Did Last Summer Review

Last updated: February 3, 2026

movieMx Editorial Team
REVIEWED BY

movieMx Editorial Team

🔍 Cinematic Analysis Expert

Leading cinematic analysis expert with over 10 years of experience in Bollywood and Hollywood box office tracking. Reviewed 500+ films with a focus on narrative structure and commercial profitability.

📅 Updated: February 3, 2026 🎟️ Verified Viewing

🎬 Quick Verdict: Hit or Flop?

Is I Know What You Did Last Summer (2025) worth watching? According to our cinematic analysis, the film stands as a ABOVE AVERAGE with a verified audience rating of 5.7/10. Whether you're looking for the box office collection, ending explained, or parents guide, our review covers everything you need to know about this Horror.

🎭 Cast Performances: A Masterclass

The success of any Horror is often anchored by its ensemble, and I Know What You Did Last Summer features a noteworthy lineup led by Chase Sui Wonders . Supported by the likes of Madelyn Cline and Sarah Pidgeon , the performances bring a palpable realism to the scripted words.

Performance Analysis: While the cast delivers competent and professional performances, they are occasionally hampered by a script that leans into familiar archetypes.

💡 Final Verdict: Is it Worth Watching?

In summary, our editorial assessment of I Know What You Did Last Summer (2025) is mixed. With an audience rating of 5.7/10, it stands as a decent one-time watch.
Result: ABOVE AVERAGE
Based on verified audience sentiment and box office trajectory, I Know What You Did Last Summer stands as a ABOVE AVERAGE.

Story & Plot Summary: I Know What You Did Last Summer

Quick Plot Summary: I Know What You Did Last Summer is a Horror, Mystery, Thriller film that crafts an atmosphere of dread and suspense, using psychological terror and visual scares. This summary provides a scannable look at the movie's central conflict and narrative structure.

Story Breakdown

The horror unfolds through carefully crafted atmosphere and escalating dread. 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. A year later, their past comes back to haunt them and they're forced to confront a horrifying truth: someone knows what they did last summer…and is hell-bent on revenge. The film uses both psychological terror and visceral scares, building tension through what's unseen as much as what's shown. The pacing allows for breathing room between scares, making each frightening moment more effective.

Narrative Structure

  • Opening Hook: An unsettling prologue sets the ominous tone, hinting at the terror to come while establishing the rules of this world.
  • Character Arc: Character development is present but somewhat formulaic, following familiar patterns without adding fresh perspectives to the genre.
  • Climax & Resolution: The final act escalates the terror to its peak, forcing characters to confront the source of horror directly.

Ending Explained: I Know What You Did Last Summer

Ending Breakdown: I Know What You Did Last Summer attempts to tie together its various plot elements. The finale presents its approach to horror resolution.

The final reveal recontextualizes earlier scenes, offering viewers material for post-viewing discussion.

Ending Analysis:

  • Narrative Resolution: The story concludes by addressing its primary narrative threads, providing closure while maintaining some ambiguity.
  • Character Arcs: Character journeys reach their narrative endpoints, reflecting the film's thematic priorities.
  • Thematic Payoff: The ending reinforces the horror themes established throughout the runtime.

The final moments of I Know What You Did Last Summer reflect the filmmakers' creative choices, offering an ending that aligns with the film's tone and style.

Who Should Watch I Know What You Did Last Summer?

Consider Watching If:

  • You're a completist for Horror films
  • You're curious despite mixed reviews
  • You have low expectations and want casual entertainment

Box Office Collection: I Know What You Did Last Summer

Metric / RegionCollection (Approx)
Production Budget $18.0M
Worldwide Gross $64.8M
Trade Verdict FINANCIAL DISAPPOINTMENT

I Know What You Did Last Summer Budget

The estimated production budget for I Know What You Did Last Summer is $18.0M. This figure covers principal photography, talent acquisitions, and visual effects. When accounting for global marketing and distribution, the break-even point is typically 2x the base production cost.

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Top Cast: I Know What You Did Last Summer

All Cast & Crew →
Madelyn Cline
Madelyn ClineDanica Richards
Sarah Pidgeon
Sarah PidgeonStevie Ward
Jonah Hauer-King
Jonah Hauer-KingMilo Griffin
Tyriq Withers
Tyriq WithersTeddy Spencer
Billy Campbell
Billy CampbellGrant Spencer
Brandy Norwood
Brandy NorwoodKarla Wilson
Gabbriette
GabbrietteTyler Trevino
Austin Nichols
Austin NicholsPastor Judah Gillespie
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Where to Watch I Know What You Did Last Summer Online?

Streaming Hub

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🎟️ Rent on

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Amazon VideoAmazon Video

🏷️ Buy on

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I Know What You Did Last Summer Parents Guide & Age Rating

2025 Advisory
R

Official Age Rating

Wondering about I Know What You Did Last Summer age rating or if it's safe for kids? Here is our cinematic advisory:

I Know What You Did Last Summer is rated R. Parents should be aware that it contains frightening scenes, intense suspense, mature themes, violence. It is intended for mature audiences only.

⏱️ Runtime & Duration

The total runtime of I Know What You Did Last Summer is 111 minutes (1h 51m). Ensuring you have enough time for the full cinematic experience.

Verdict Summary

Analyzing the overall audience sentiment, verified rating of 5.7/10, and global performance metrics, I Know What You Did Last Summer is classified as a ABOVE AVERAGE. It remains an essential part of the 2025 cinematic calendar.

ABOVE AVERAGE
Official movieMx status for I Know What You Did Last Summer. Rating: 5.7/10

Frequently Asked Questions

Is I Know What You Did Last Summer worth watching?

I Know What You Did Last Summer is definitely worth watching if you enjoy Horror movies. It has a verified rating of 5.7/10 and stands as a ABOVE AVERAGE in our box office analysis.

Where can I find I Know What You Did Last Summer parents guide and age rating?

The official parents guide for I Know What You Did Last Summer identifies it as R. Our detailed advisory section above covers all content warnings for families.

What is the total runtime of I Know What You Did Last Summer?

The total duration of I Know What You Did Last Summer is 111 minutes, which is approximately 1h 51m long.

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Critic Reviews for I Know What You Did Last Summer

🛡️

movieMx Verified

This review has been verified for accuracy and editorial quality by our senior cinematic analysts.

This analysis is compiled by our editorial experts using multi-source verification and audience sentiment data for maximum accuracy.

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Expert Consensus
Live Rating
MOVIEMX
★ 5.7
I Know What You Did Last Summer
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