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I Know What You Did Last Summer

3.51  ·  Rating Details ·  9,109 Ratings  ·  740 Reviews
It was only an accident -- but it would change their lives forever. Last summer, four terrified friends made a desperate pact to conceal a shocking secret. But some secrets don't stay buried, and someone has learned the truth. Someone bent on revenge. This summer, the horror is only beginning....
Hardcover, 199 pages
Published April 6th 1999 by Turtleback Books (first published 1973)
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Joshua Thomas Not really. It's completely different from the film that was made about it. There's not really a 'killer' in this book, it's more of a stalker who…moreNot really. It's completely different from the film that was made about it. There's not really a 'killer' in this book, it's more of a stalker who just watches and sends notes. It's not even that suspenseful. There's better scary books out there, like Trick or Treat by Jackson Sharp is one I'm reading right now that's quite creepy. But this book just didn't have the same effect as the movie. I don't say this much but the movie was better than the book haha. I'd give it a miss if I was you. (less)
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Community Reviews

(showing 1-30)
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Joe Valdez
Jul 09, 2016 Joe Valdez rated it really liked it  ·  review of another edition
Shelves: mystery-suspense
Before it was a '90s slasher movie, I Know What You Did Last Summer was actually a novel by Lois Duncan and believe it or not, a very good one. Published in 1973 and revised by the author in 2010, I had superficial issues with her decision to rebrand everything from fashion to geopolitics to telephones for the Young Adult reader of today--a decision that felt financial as opposed to creative--but where it matters, the book generates a terrific amount of suspense and delivers a satisfying payoff ...more
Darth J
Okay guys, I read this book when I was in fourth grade (when the movie came out) so my recollection will be a little bit foggy. Just go with me on this, okay? (view spoiler)

So the plot of this story centers on Julie James (view spoiler)
Rebecca McNutt
Not the greatest film in the world and even worse of a book. I Know What You Did Last Summer is so cheesy and predictable that it seems almost on-purpose. The characters are ridiculous caricatures of "typical teens" and they acted completely ridiculous at the best of times.
Christian Guzman
I read this novel in one sitting. It wasn’t the most enjoyable book I have read, but it wasn’t unexciting either. I would have probably enjoyed this novel way more if I had read it when I was about 13 years old. The concept and plot of the book grabbed my attention which is why I decided to read it. Also, the length of the book was ideal, just in case if I didn’t enjoy it I wouldn’t have wasted too much time on it. It was quite entertaining, but it lacked suspense for me. At first I found it to ...more

Hopefully you didn't just read that. For those of you who were smart enough to skip that spoiler you can now read in confidence knowing that you will not be told that the book was made into a movie. You will live in happy naivety thinking that the book is a self-contained form of media in which this narrative lives. Unfortunately, you will be wrong.

Since I have neither read the book, nor seen the movie. I can safely
Four kids drive home after a high-school-party, everyone - including the driver - a bit intoxicated and tipsy. Then happens what always happens in such situations: an accident on a dark road. They knocked over a young boy, riding with his bicycle. For fear of the police they don't administer first aid but instead do a hit-and-run.

One year later - they've almost forgotten the incident - they're reminded of it via mysterious letters. Someone outside of their circle seems to know their dark secret.
Mar 14, 2011 Trisha rated it really liked it  ·  review of another edition
I loved this guilty pleasure read. I thought it was different from the movie,but then again I couldn't really remember the movie. I think I was just in the mood for some mystery and silly suspense.
Sep 07, 2009 DVonte rated it it was amazing  ·  review of another edition
This review has been hidden because it contains spoilers. To view it, click here.
Paula Brandon
Oct 26, 2016 Paula Brandon rated it really liked it  ·  review of another edition
Yes, I saw the movie before I read the book, but I knew who Lois Duncan was, as I'd already read Daughters Of Eve and Killing Mr. Griffin and loved them. I really enjoyed this one too. I understand Lois Duncan was very upset at the movie version - but what was she expecting? (view spoiler) ...more
Jun 08, 2014 Emily rated it did not like it  ·  review of another edition
Wow. I remember loving this book as a 7th grader. Oh, how my tastes have changed. It was so bad. Nothing happens: boring, boring, boring! The only interesting part is what everyone already knows about the story.
Jul 04, 2008 Allyson rated it really liked it  ·  review of another edition
Shelves: own-it
Great horror book for anyone who loves mysteries and horror combined!
Susan Mackie Powers
I was not at all impressed with this book. The movie was cheesy, but fun, but the book was just silly. For one thing, none of the characters were likable; they just seemed like stereotypes of the different cliques we all knew in high school: the beauty, the jock, the brain, and the nice guy. The four main characters were out partying and driving too fast, when a little boy on a bike suddenly appeared in the road ahead of them. They hit the boy, and kept right on driving to save their own necks. ...more
Jul 03, 2017 Katie rated it it was ok  ·  review of another edition
This review has been hidden because it contains spoilers. To view it, click here.
Carolyn  Storer
As with many of you, I watched the movie 'I Know What You Did Last Summer' many years ago and didn't realise it was actually based on a novel. I say based loosely as the film doesn't really have much to do with the book - whereas the film is much more in the 'horror' genre, the book is just a light thriller.

It was originally written in 1973 but I read the newly revised edition published by Atom. I'm not fond of revised books. I much prefer to read the original version, I don't like the idea of a
Feb 05, 2008 Mark rated it really liked it  ·  review of another edition
Recommends it for: Middle School Students
Shelves: power-player
This review has been hidden because it contains spoilers. To view it, click here.
My mother recommended this book to me. She's not a reader, but she did remember that she read this in Junior High and that she liked it. I read it because now it's something that we have in common.

The feel of this book reminded me instantly of Richard Peck's Are You in the House Alone? mixed with a teenaged version of Agatha Christie's And Then There Were None. There are differences as well. It isn't exactly how I just described it, but all three have the anonymous threatening letters involved
Erin ☕ *Proud Book Hoarder*
I've found that I love Lois Duncan's writing style, her stories, and her hidden layers, but this one fell a bit short. It's ironic since out of the stories I've read of hers, this is inferior, but it's the most popular because of the movie.

The film, by the way, is much different. We don't get a hand hook killer tracking down the teenagers. Here it's a mini mystery. The ending is rather simple and cheesy. Backstory is depressing, you feel for the victim and the consequences. I liked the main char
Marcus Simon
Mar 07, 2010 Marcus Simon rated it really liked it
This book is about some teenagers that went camping but the bad thing that happened when they were coming back home for their trip, there was a little boy on a bike who drove on the road. And the kids were drunk when they were driving so they didnt see him. So the teenagers hit the little boy on the bike, and they did kill that little boy. They made a pact to never tell anyone about it or ever bring it up again. It was working to, until this one little note that changed their lives forever.On th ...more
Amy Y.
Mar 22, 2011 Amy Y. rated it did not like it  ·  review of another edition
"I Know What You Did Last Summer" is about these 4 teenagers named Barry, Julie, Ray and Helen had all coped with one little secret they had tragically kept for their whole summer. As things began to clear up, Julie recieves a threatning message... Immediately, Julie knew that someone has figured out her secret, a deadly secret. Julie and her friends undergo obstacles to find the messenger and put a end to their nightmares. They need to outsmart the killer before all of them dies before they eve ...more
Aurora Dimitre
What really made this for me was the fact that I just didn't see the twist coming. I mean, I saw part of it. But I didn't see the big, big twist - and I totally should've and for that I had to give it some credit for that. Other than that, pretty normal, cheesy teen horror.
Sep 01, 2014 Abbie rated it liked it  ·  review of another edition
Actual rating - 2.5

I didn't enjoy this one that much, which wasn't a surprise since I didn't like the other ones I've read from this author. It certaintly weren't the worse one, but most of the story was pretty dull, and I was glad when it was over.

Sep 10, 2016 Jennifer rated it really liked it  ·  review of another edition
Three stars for content, one for nostalgia.

Also, original version, not the 2010 updated version.
Originally posted on my blog Reading Wilder.

Now I’m going to admit that I’ve never watched the 1997 slasher film adaptation of this novel. I’m too much of a scaredy cat to ever subject myself to watching any sort of horror film that is likely to have jump scares and unnecessary gore. However, I am an avid fan of horror, thriller, and suspense novels, so when I saw a copy of this book for $0.50 at my local Friends of the Library bookstore, I jumped at the chance to pick it up.

Going into this nove
So my group on Goodreads started the Blind Date Challenge again, and my partner and I picked this book. I was really interesting in this one, I heard a lot about the book and the movie, so I was curious if it was really as good as everyone said.

Sadly, it was not. It started off pretty good though, and I was really exited to read the book. The changing POVs were done really well (every chapter we had a different character), and the story was interesting. However as the book progressed I started t
Coleman Gorzynski
For my first unit two novel review I read the horror book I Know What You Did Last Summer by Lois Duncan. The book is about a group of friends who accidently hit a kid on his bicycle at night driving home from a party. The night they hit the kid they all made a pact, that said that they would never talk about it ever again. A year later, the friends start to get letters and newspaper clippings talking about a boy who had been hit on his bicycle. It turns out someone saw what had happened and fou ...more
Liz Sealey
Sep 24, 2014 Liz Sealey rated it really liked it  ·  review of another edition
Shelves: fiction
In I know what you did last summer, the four main characters, Ray, Barry, Helen, Julie find themselves in a rather horrifying accident. The four college kids are driving late at night and they accidentally hit a young boy, who was crossing the street at that time. A year later, unexplainable murders begin to take place, this eventually takes a huge toll on them physiologically and one by one they become partly insane.

I think Lois Duncan did a good job of setting up a suspenseful storyline espec
Graeme Cash
Four high school students, Julie, Helen, Barry and Ray are returning from a party when they accidentally hit a young boy riding his bike home. Other than stopping to make a call to report the accident the teens do nothing to help. Fearing the accident will ruin their lives they make a pact to never speak of the incident again.

A year has passed and the group has drifted apart. Julie has dropped the cheerleading squad and become a serious student, Helen has dropped out of high school and is the ne
Rachel Strickland
*First read in 2011*

This book tells the story of four teenagers, Julie, Ray, Helen, and Barry, who make a huge mistake one night. They make a pact that night to never again speak about what happened, but one year later, Julie receives a note that claims to know what happened the summer before. The kids begin to wonder if the writer of the note could, indeed, know what happened and what they plan to do about it.

This book was originally published in 1973 but was revised and modernize
Emma Lowers
Jan 03, 2014 Emma Lowers rated it really liked it  ·  review of another edition
Ray Brunson, Julie James, Barry Cox, and Helen Shivers were fun, popular, outgoing high-school students returning from a rowdy party one dark summer night when something happened that would change their lives forever. With the effects of drugs and alcohol upon all of them, Barry took no notice of the outline of a bicycle straight ahead. Wham! The little boy, later identified as Daniel Greggs, was instantly killed. The cowardly, young kids decided not to report the hit-and-run and to never bring ...more
Nov 30, 2016 Makenzie rated it really liked it  ·  review of another edition
"I know what you did last summer" was a story about a group of friends that slowly drifted apart after this one summer. One friend went to California, one went to finish college, one continued on with work, and another was still finishing high school. The girl finishing high school was named Julie. One morning she got a note, it said "I know what you did last summer." Julie stayed very unsettled about this matter already, but this made it worse. Guilt filled her whole body. After she went to sch ...more
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goodreads 1 1 6 Apr 10, 2014 05:36AM  
Madison Mega-Mara...: I Know What You Did Last Summer by Lois Duncan 3 5 Jun 21, 2013 05:31AM  
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what do you think about this book? 7 38 Feb 16, 2012 07:01AM  
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Lois Duncan (born Lois Duncan Steinmetz) was an American writer and novelist, known primarily for her books for children and young adults, in particular (and some times controversially considering her young readership) crime thrillers. Duncan's parents were the noted magazine photographers Lois Steinmetz and Joseph Janney Steinmetz. She was born in Philadelphia, Pennsylvania, but grew up in Saraso ...more
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“aloud she said why not you ray you were involed in this as much as the resst of uswhy is it that bud never tried to do anything to you ?his armed tighted around her.'he knew the worst thing for me was a world without you” 14 likes
“she thought ray i'll never see ray again there was a time she looked into those green eyes and said i love you so long ago he'll never know i still do” 8 likes
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