TV series
I Know What You Did Last Summer
2021, English, on Prime Video. Created by Sara Goodman.
No one is safe.
In a sun-soaked Hawaiian town with a mysterious past, a group of friends is left with a dark secret after a tragic accident. One year later, a member of the group receives a threatening message, and the friends now know that someone intends to make them pay for last summer.
- Seasons
- 1
- Episodes
- 8
- Episode length
- 49 min
- Status
- Cancelled in 2021
Popcorn Flick
Fun if you don’t overthink it.
6.4/10 from 260 TMDB viewer ratings.
Seen it? Give your verdict.
Saved privately on this device.
Where to watch I Know What You Did Last Summer
I Know What You Did Last Summer is streaming on Amazon Prime Video in India.
Amazon Prime Video
Amazon Prime Video with AdsAvailability in India as of 11 November 2026. Streaming data by JustWatch.
Latest episode
S1 E8: Your Next Life Could Be So Much Happier
Aired 11 November 2021
Seasons 1
Cast & crew
- Sara GoodmanCreator
- Madison IsemanLennon / Alison · 8 ep
- Bill HeckBruce · 8 ep
- Brianne TjuMargot · 8 ep
- Zeke GoodmanDylan · 8 ep
- Ashley MooreRiley · 8 ep
- Fiona ReneLyla · 8 ep
- Cassie BeckCourtney · 8 ep
- Brooke BloomClara · 8 ep
- Sonya BalmoresMel Gilbert · 7 ep
- Danielle DelaunayHannah Scanlon · 5 ep
- Spencer SutherlandDale · 4 ep
- Chrissie FitKelly Craft · 4 ep
Details
- First aired
- 14 October 2021
- Last aired
- 11 November 2021
- Network
- Prime Video
- Language
- English
- Country
- United States
- Type
- Scripted
- Rated
- TV-MA
Check ratings elsewhere
News & fan talk
What I Know What You Did Last Summer is based on
I Know What You Did Last Summer is based on I Know What You Did Last Summer, a 1973 novel by Lois Duncan, published by Little, Brown and Company.
Novel · 1973
I Know What You Did Last Summer
By Lois Duncan
Published by Little, Brown and Company
Source details from Wikidata and TMDB.
If you liked I Know What You Did Last Summer
The Better Sister
TV · 2025 · 6.9/10
Popcorn FlickRecommended by TMDB viewers
Echoes
TV · 2022 · 6.6/10
Popcorn FlickRecommended by TMDB viewers
Pretty Little Liars: Original Sin
TV · 2022 · 7.8/10
Worth the HypeRecommended by TMDB viewers
56 Days
TV · 2026 · 7.4/10
Worth the HypeRecommended by TMDB viewers
The Girlfriend
TV · 2025 · 7.1/10
Worth the HypeRecommended by TMDB viewers
Fool Me Once
TV · 2024 · 7.2/10
Worth the HypeRecommended by TMDB viewers
The Purge
TV · 2018 · 6.9/10
Popcorn FlickRecommended by TMDB viewers
Sherlock & Daughter
TV · 2025 · 6.8/10
Popcorn FlickRecommended by TMDB viewers
Imperfect Women
TV · 2026 · 6.2/10
Popcorn FlickRecommended by TMDB viewers
Why Didn't They Ask Evans?
TV · 2022 · 6.6/10
Popcorn FlickRecommended by TMDB viewers
I Know What You Did Last Summer: quick answers
Is I Know What You Did Last Summer worth watching?
Our verdict is Popcorn Flick: Fun if you don’t overthink it. It scores 6.4/10 from 260 TMDB viewer ratings.
How many seasons of I Know What You Did Last Summer are there?
I Know What You Did Last Summer has 1 season and 8 episodes, about 49 minutes each.
Is I Know What You Did Last Summer finished?
Yes. I Know What You Did Last Summer was cancelled in 2021, so you can watch the whole story.
Which OTT platform is I Know What You Did Last Summer on?
I Know What You Did Last Summer is streaming on Amazon Prime Video in India. (Checked 11 November 2026.)
I Know What You Did Last Summer parents guide: is it suitable for kids?
I Know What You Did Last Summer is rated TV-MA. Check the rating guidance before watching with young children.
What shows are like I Know What You Did Last Summer?
If you liked I Know What You Did Last Summer, try The Better Sister, Echoes, Pretty Little Liars: Original Sin.
Who created I Know What You Did Last Summer?
I Know What You Did Last Summer was created by Sara Goodman and stars Madison Iseman, Bill Heck, Brianne Tju.
What is I Know What You Did Last Summer based on?
I Know What You Did Last Summer is based on I Know What You Did Last Summer, a 1973 novel by Lois Duncan, published by Little, Brown and Company.