I Know What You Did Last Summer Trivia
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This I Know What You Did Last Summer trivia quiz has 49 free questions with answers and covers the whole franchise: Lois Duncan's 1973 suspense novel, Kevin Williamson's post-Scream screenplay, the 1997 film that made Jennifer Love Hewitt, Sarah Michelle Gellar, Ryan Phillippe and Freddie Prinze Jr. into a poster, the Bahamas-set 1998 sequel with Brandy, the 2006 direct-to-video entry, the 2021 Amazon series and the 2025 legacy sequel that brought Hewitt and Prinze back to Southport. The questions stick to production, cast, box office, settings and story beats rather than gore, so they work for a Halloween party, a 90s movie night or a horror-fan quiz where not everyone has a strong stomach. Easy ones for anyone who has seen the poster; harder ones on directors, filming locations, release dates and the book. Every answer was checked against encyclopedic sources before it went live, and each question explains itself as soon as you pick.
30 of 49 questions with answers and explanations. Play the quiz
Q 01I Know What You Did Last Summer was still number one on which holiday weekend?
Halloween
Halloween: the film opened in mid-October and was still number one in its third weekend, October 31 to November 2, which its director said he couldn't believe.
Q 02Which Scottish director made I Know What You Did Last Summer, the 1997 original?
Jim Gillespie
Jim Gillespie shot the film with almost no on-screen blood, and gave way only once, reshooting one death to add a splash of blood on a glass door.
Q 03Who wrote the screenplay for I Know What You Did Last Summer, adapting a 1973 young-adult thriller?
Kevin Williamson
Kevin Williamson's script had been passed over by the studio until his Scream became a surprise hit, and it was then rushed into production.
Q 04I Know What You Did Last Summer is based on a 1973 suspense novel by which author?
Lois Duncan
Lois Duncan disliked seeing her suspense story become a violent slasher, a reaction sharpened by the murder of her own teenage daughter in 1989.
Q 05Who plays Julie James, the lead in I Know What You Did Last Summer?
Jennifer Love Hewitt
Jennifer Love Hewitt, then known for the TV drama Party of Five, was the first of the four leads cast, chosen for her ability to project vulnerability.
Q 06Which character does the future Buffy star play?
Helen Shivers
Sarah Michelle Gellar's sister Elsa is played by Bridgette Wilson; Gellar earned an MTV Movie Award nomination for Best Breakthrough Performance.
Q 07Ryan Phillippe plays which character in I Know What You Did Last Summer?
Barry Cox
Barry Cox is the drunken passenger whose antics distract the driver and cause the crash; a year on, he is the first of the four friends the killer goes after.
Q 08In I Know What You Did Last Summer, what is the name of the fishing boat Ray works on a year later?
Billy Blue
Billy Blue is also the name a stranger gave when he visited the dead man's sister, so when Julie spots it painted on the boat she suspects the wrong man.
Q 09In which North Carolina town is I Know What You Did Last Summer set?
Southport
Southport is a real fishing town where much of the film was shot; in the 2025 sequel its leaders try to bury the memory of the killings to protect property values.
Q 10Although set in North Carolina, I Know What You Did Last Summer opens on a rugged sunset coast filmed in which state?
California
California: the opening cliffs, the crash and the friends' beach scene were shot along Highway 1 on the Sonoma coast, a continent away from the Carolina town of the story.
Q 11On which holiday do the four friends of I Know What You Did Last Summer have their fateful accident?
Fourth of July
Fourth of July: the four are driving home from the celebrations when they hit a man on the coast road, and a year later the killer murders two of them on the night of the holiday pageant.
Q 12Which spoof film borrowed its hit-and-run cover-up plot from I Know What You Did Last Summer?
Scary Movie
Scary Movie: Keenen Ivory Wayans's 2000 comedy put Scream's masked killer on the trail of teenagers who hit a man with their car, dump the body and swear each other to secrecy.
Q 13In I Know What You Did Last Summer, the killer in the fisherman's slicker is unmasked as which character?
Ben Willis
Q 21In I Know What You Did Last Summer, Helen wins a beauty pageant named after which local fish?
The croaker
The croaker: Helen is crowned Croaker Queen, and the director built a whole Croaker Festival around the pageant, with fish-shaped buggies and fish hats in the parade.
Q 22Which 1990s sitcom spoofed I Know What You Did Last Summer in its episode 'And Then There Was Shawn'?
Boy Meets World
Boy Meets World: the 1998 episode traps the friends in detention with an unseen killer, and casts the film's own leading lady as a doomed transfer student called Feffie.
Q 23The 2021 I Know What You Did Last Summer series moved the story from the Carolina coast to which state?
Hawaii
Ben Willis is a fisherman whose daughter drowned in a car David Egan was driving; he had just taken his revenge on David when the friends' car hit him.
Q 14Which actress plays Missy Egan, the supposed victim's sister, in I Know What You Did Last Summer?
Anne Heche
Anne Heche has only two scenes as Missy, but the director wanted a strong presence in the part because several turns of the plot hinge on her.
Q 15Which future Big Bang Theory star plays Max Neurick in I Know What You Did Last Summer?
Johnny Galecki
Johnny Galecki, fresh from Roseanne, was only given a death scene in reshoots: early audiences needed to see the killer do something to believe he was dangerous.
Q 16Made for about $17 million, I Know What You Did Last Summer grossed roughly how much worldwide?
$125M
$125M: more than seven times what it cost, and enough for the studio to have a sequel in cinemas thirteen months later.
Q 17A 1999 Simpsons parody of I Know What You Did Last Summer has the family run over which Springfield regular?
Ned Flanders
Ned Flanders: the segment is titled 'I Know What You Diddily-Iddily-Did', and he comes back as a werewolf to hunt the family down.
Q 18Which line does Julie James scream at the unseen killer from the middle of the street?
'What are you waiting for?!'
'What are you waiting for?!' was, the film's star has said, the idea of a child who won a contest to create a moment for the movie.
Q 19Which comic actor turns up uncredited as the stoner Titus in I Still Know What You Did Last Summer?
Jack Black
Jack Black took no screen credit as Titus, who greets the friends by offering them weed and later becomes one of the killer's victims.
Q 20Where is Julie James living in the final scene of I Know What You Did Last Summer?
At college in Boston
At college in Boston: the director has said a preview showed the film's first ending to be an anticlimax, so this epilogue was shot after the main filming had wrapped.
Hawaii: the series was shot on Oahu, but the change of scene didn't save it, and it was cancelled after a single season.
Q 24In the 1973 novel I Know What You Did Last Summer, who turns out to be tormenting the four friends?
Their victim's older brother
Their victim's older brother: he moves into Helen's apartment block and dates Julie under another name, and unlike in the film none of the four friends dies.
Q 25In the 1973 novel I Know What You Did Last Summer, the accident victim David Gregg was riding what?
A bicycle
A bicycle: the victim in the book is a young boy, and one of the first anonymous messages is a magazine picture of a boy on a bike taped to Helen's door.
Q 26The 1998 sequel, I Still Know What You Did Last Summer, moves the action to which location?
A resort in the Bahamas
A resort in the Bahamas: the friends arrive on the last day of the season, just before a storm cuts the island off and strands them with the killer.
Q 27Which R&B singer co-stars as Karla Wilson in I Still Know What You Did Last Summer?
Brandy
Brandy came back to the part 27 years on, in a credits scene of the 2025 film where Julie arrives to warn Karla that the danger is not over.
Q 28In I Still Know What You Did Last Summer, Karla wins a trip by wrongly naming which city as Brazil's capital?
Rio de Janeiro
Rio de Janeiro: the capital is Brasília, and a prize handed over for a wrong answer is the first sign that the whole contest is a trap.
Q 29The 2006 third film, I'll Always Know What You Did Last Summer, was released how?
Straight to DVD
Straight to DVD: Sony developed it alongside Hollow Man 2 and Road House 2, weighed a cinema release, and in the end sent it out with none of the original cast.
Q 30I'll Always Know What You Did Last Summer is set in the fictional town of Broken Ridge, in which state?
Colorado
Colorado: the third film swaps the coast for a mountain town, where a carnival prank built on the legend of the Fisherman leaves one of the pranksters dead.