I Know What You Did Last Summer (2021)

Drama · Horror · Mystery

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.

IMDb rating: 5.4 (11,054 votes)
Seasons: 1
Streaming (US): Amazon Prime Video
Language: EN
Type: TV series

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Ratings refreshed Aug 19, 2026 · 1 season indexed

Cast

Madison Iseman Lennon / Alison
Bill Heck Bruce
Brianne Tju Margot
Zeke Goodman Dylan
Ashley Moore Riley
Fiona Rene Lyla

Seasons

Season 1 (2021)

6.10 avg 8 episodes 6.1 → 4.7 48 min avg

Bad finale
Rollercoaster

Season 1 episodes - IMDb ratings
#	Title	Rating	Votes
1	It's Thursday	6.1	766
2	It's Not Just for Dog Shit	6.5	626
3	A Gorilla Head Will Not Do	6.3	553
4	Hot Shrimp Salad	6.5	554
5	Mukbang	6.1	488
6	Least You Had a Spare	6.4	465
7	If Only Dogs Could Talk	6.2	468
8	Your Next Life Could Be So Much Happier	4.7	585