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I Know What You Did Last Summer (1997)

R  |   |  Horror, Mystery, Thriller  |  17 October 1997 (USA)
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Ratings: 5.6/10 from 100,315 users   Metascore: 52/100
Reviews: 417 user | 138 critic | 17 from Metacritic.com

Four teens are in great danger one year after their car hits a stranger whose body they dump in the sea.



(novel), (screenplay)
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3 wins & 7 nominations. See more awards »



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Cast overview, first billed only:
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Pageant Official


Adaptation of Lois Duncan's thriller about four teenagers trying to cover up a hit-and-run. Love Hewitt plays Julie, a high school senior who goes trip with her friends and accidently hits a fisherman. They think he is dead and dump him into the waters. But later they get a strange letter that says "I know what you did last summer." Written by Lawless <Lawless@netside.com>

Plot Summary | Plot Synopsis


Someone knows their secret, someone knows they're scared, and someone knows what they did last summer. See more »

Motion Picture Rating (MPAA)

Rated R for strong horror violence and language | See all certifications »

Parents Guide:





Release Date:

17 October 1997 (USA)  »

Also Known As:

Sé lo que hicieron el verano pasado  »

Box Office


$17,000,000 (estimated)

Opening Weekend:

$15,818,645 (USA) (17 October 1997)


$72,219,395 (USA) (10 April 1998)

Company Credits

Show detailed on  »

Technical Specs


| (cut)

Sound Mix:




Aspect Ratio:

2.35 : 1
See  »

Did You Know?


The group goes to "Dawson's Beach". This is a reference to Dawson's Creek (1998), also written by Kevin Williamson. See more »


(at around 1h 30 mins) When Julie is in the room filled with ice, it jiggles when she moves it (it was made of gelatin). See more »


Barry: [to Ray] And since you bring it up... we all know *you* have a slicker.
See more »


Referenced in Will & Grace: William, Tell (1998) See more »


Written by Dean Pitchford and Michael Gore
Arranged by Eric Colvin
Performed by Jennifer Bland
See more »

Frequently Asked Questions

See more (Spoiler Alert!) »

User Reviews

True, it's another teen slasher flick
13 November 2003 | by (Chicago, Illinois) – See all my reviews

In the late 90's, there had seemed to be a trend of the Dawson's Creek meets Halloween slasher flicks, some had big hits like Scream, and some kinda missed like Urban Legend, then right in between came I Know What You Did Last Summer based off the book of the same name and I do mean just based on the book because the book and the movie are two entirely different tales. The book was more of a moral story while this was just a plain slasher teen flick, but over all I would say that I Know What You Did Last Summer was a decent horror flick. It starred the biggest stars of it's time: Sarah Michelle Gellar, Freddie Prinze, Jr., Jennifer Love Hewitt, and Ryan Phillipe, and surprisingly they clicked pretty well, but I think that's because they just all have to play pretty white kids with problems, lol. But it's all good, this was a fun little horror flick.

Four high school friends have graduated and are celebrating the fourth of July. They all have big plans: Julie is planning to go to Harvard, Helen is going to New York to become an actress, Ray is staying in town to help with the business of fishing, and Barry has a wrestling scholarship. They all are just having a big party and while driving home they accidentally hit a man, killing him. Freaked out and scarred for what might happen since alcohol is involved, they dump the body in the river hoping that it'll go away. But a year later when the friends re-unite, they are receiving letters claiming that someone knows what they did. Barry is then hit by a car, Helen's hair is chopped off, and Julie gets bodies put into her car trunk; they all must face the fisherman who is after them with a big hook and it seems like he does not want these kids to live.

I Know What You Did Last Summer has typical Dawson's Creek drama, but it's all good, I mean it was written by Kevin Williamson who wrote the series. But the cast did click very well and as cliché'd as the movie was, it's still good for a scare. Sarah does have one of the best damsel in distress chase scenes ever, that was pretty intense I have to admit. I Know What You Did Last Summer is a fun flick I would recommend to watch at midnight in the dark, you're gonna get jumpy a few times.


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