This I Know What You Did Last Summer trivia quiz has 50 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 50 questions with answers and explanations. Play the quiz
Q 01In which year was the original I Know What You Did Last Summer film released?
1997
It opened on October 17 and was number one at the box office for three weeks in a row.
Q 02Who directed the 1997 film?
Jim Gillespie
The Scottish director cast Freddie Prinze Jr. because he felt he had an 'everyman' quality.
Q 03Which screenwriter, fresh from writing Scream, wrote the 1997 screenplay?
Kevin Williamson
The script was rushed into production on the back of Scream's success, and he created Dawson's Creek the following year.
Q 04The film is based on a 1973 novel by which author?
Lois Duncan
The author of youth suspense novels was 'appalled' that her book had become a slasher film.
Q 05Who plays Julie James, the film's lead?
Jennifer Love Hewitt
She was mainly known at the time for the TV drama Party of Five.
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 of the four friends?
Barry Cox
He got the part on his audition despite being shorter than the script called for.
Q 08What is the name of the boat Ray Bronson works on a year after the accident?
Billy Blue
His boat is called Billy Blue, which becomes an important clue in the finale.
Q 09In which North Carolina town is the film set?
Southport
Most of it was filmed there too, though the opening coastal shots were taken near Jenner, California.
Q 10Coastal areas of which California county stood in for North Carolina in the film's opening?
Sonoma
The sunset over rugged cliffs was shot at Kolmer Gulch on Highway 1.
Q 11On which holiday does the fateful accident take place?
The Fourth of July
The date is July 4, 1996, and Barry and Helen ride in the town's parade the following year.
Q 12What weapon does the slicker-clad Fisherman carry?
A hook
The rain slicker and hook made the character an instant Halloween costume.
Q 13The slicker-wearing killer is eventually revealed to be which character?
Ben Willis
He is the man the friends believed they had killed, played by Muse Watson, who later played Mike Franks on NCIS.
Which actress plays Missy Egan, a role she recalled as two days of being asked to 'be scary'?
Q 21Helen competes in a town contest named after which local fish?
The croaker
The croaker is a fish, a nod to the fishing town setting.
Q 22Who composed the film's score?
John Debney
The soundtrack album also featured songs by Type O Negative and Korn.
Q 23As of 2025, what approval rating did the 1997 film hold on Rotten Tomatoes?
47%
Critics were split, but audiences turned it into one of the year's surprise hits.
Q 24In the original 1973 novel, what is Helen's surname?
Anne Heche
The same year she starred opposite Harrison Ford in Six Days, Seven Nights.
Q 15Which future Big Bang Theory star plays Max Neurick?
Johnny Galecki
He was already known as David on Roseanne.
Q 16Roughly how much did the 1997 film gross worldwide on a $17M budget?
$125M
It opened to $15.8 million in 2,524 theatres.
Q 17Which studio distributed the film?
Columbia Pictures
Producer Neal H. Moritz went on to the Fast & Furious franchise.
Q 18Which line does Julie scream to the killer while standing in the middle of the street?
'What are you waiting for?!'
The moment became the film's most quoted, and was affectionately parodied for years afterwards.
Q 19In the film's final scene, what words does Julie see written in the steam on her shower door?
'I still know'
The tease doubled as the title of the sequel released a year later.
Q 20Where is Julie living when the final scene takes place?
At college in Boston
The scene is set one year after the main story.
Rivers
The film changed it; the book is set in the fictional Silver Springs near the Cibola National Forest.
Q 25In the novel, the accident victim David Gregg was riding what?
A bicycle
The book was published in October 1973 and its movie tie-in edition sold 517,000 copies by late 1998.
Q 26The 1998 sequel, I Still Know What You Did Last Summer, moves the action to which location?
A resort in the Bahamas
Julie wins the trip in a radio contest; the film opened on November 13, 1998.
Q 27Which R&B singer co-stars as Karla Wilson in the 1998 sequel?
Brandy
Mekhi Phifer and Matthew Settle joined the cast, and Jack Black turns up uncredited as Titus.
Q 28Who directed I Still Know What You Did Last Summer?
Danny Cannon
The sequel grossed $84 million worldwide, less than the original.
Q 29The 2006 third film, I'll Always Know What You Did Last Summer, was released how?
Straight to DVD
Directed by Sylvain White, it is set in the fictional Broken Ridge, Colorado, with an all-new cast.
Q 30In which state is the 2006 film's fictional town of Broken Ridge?
Colorado
The plot again begins with a Fourth of July prank gone wrong, this time at a town carnival.