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Trivia / I Know What You Did Last Summer

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The 1997 film adaptation:

  • Actor-Shared Background: A sad example. Anne Heche lost a brother to suicide just like Missy does in the film.
  • Blooper: As Julie runs towards Ray's boat, she can be heard mistakenly calling out "Freddie" instead of "Ray".
  • Dawson Casting:
    • Ryan Phillippe was twenty-two playing Barry.
    • Sarah Michelle Gellar and Freddie Prinze Jr. are subversions, as they were about twenty. Their ages match their characters' after the Time Skip.
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    • Inverted for Jennifer Love Hewitt - who was two years younger than Julie is supposed to be.
    • Max isn't said to be a teen, but some dialogue implies he's the same age as the friends. Johnny Galecki was twenty-one.
  • Disowned Adaptation: Lois Duncan has openly stated she detests the movie, as she was appalled that they turned her suspense novel in which the only death is the hit-and-run that sets off the plot into a Slasher Movie (see In Name Only on the main page), especially in light of her own daughter, Kaitlyn Arquette, being murdered in 1989. The only silver lining she was able to find in it was that it made people seek out the book and her other writing, giving her career a second wind. Even so, it's telling that the sequel didn't credit her for the use of her (remaining) characters.
  • Follow the Leader: Kevin Williamson actually wrote this script before Scream (1996) but had trouble selling it. After the success of Scream it was immediately bought. It's assumed that Urban Legend was inspired by this one.
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  • Irony as She Is Cast: Joss Whedon has said that Buffy the Vampire Slayer was created as a subversion of the helpless blonde who would inevitably be killed by the monster. Sarah Michelle Gellar plays that very character type, and did so while filming Season 2 of Buffy.
  • Missing Trailer Scene: The trailer has a shot from the "what are you waiting for?" scene where Helen says "the wait is over" that isn't in the final film.
  • Romance on the Set: Sarah Michelle Gellar and Freddie Prinze Jr. met while filming, and eventually married. Hilariously enough, Ray and Helen only interact twice in the whole film.
  • Star-Making Role:
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  • Throw It In!: The "what are you waiting for?" moment was requested by a teenage fan who had won a contest.
  • What Could Have Been:
    • An alternate ending to the film would have Julie on the computer, receiving an email that said "I still know." This was later used as a preview for the sequel.
    • Max's death wasn't added until re-shoots. Word of God says that it was needed to show that the killer was an actual threat to the protagonists.
    • Peter Jackson was approached to direct the sequel.

Lois Duncan's original novel:

  • Life Imitates Art: Lois Duncan's own daughter was murdered in a drive-by shooting in 1989.
  • Unintentional Period Piece: The book dates itself to the 70s with a lot of the dialogue - a lot of "golly" in there for instance. Helen's apartment block is supposed to be the posh place in town because it has a TV in its rec room, this being before apartments would be expected to have their own individual televisions. And of course one major character is a returning veteran from Vietnam. The original cover even has a girl with obvious '70s Hair. But in the 2000s, Lois Duncan had her work undergo a Setting Update - updating the slang and clothing descriptions, having the above-mentioned veteran be returning from Iraq, and inserting mentions of the characters having computers and cell phones. She commented that very little overall plot points had to be changed, and she merely found ways for the characters to not have their cell phones when they would have broken the plot.


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