Series

Watch I Know What You Did Last Summer (2021) Online

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6.4249 votes2021TV-MA49mCanceledMysteryDramaOfficial site

Synopsis

“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.

Episodes

Season 1

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1. It's ThursdayNow viewing2021-10-1450m6.3Lennon Grant returns home after her first year at college and discovers that someone knows the terrible secret she and her OG crew of friends swore to keep last summer.
2. It's Not Just for Dog Shit2021-10-1449m5.5The estranged friends reunite to try and figure who might have revealed their secret or who else knows what they did – which leads to murder.
3. A Gorilla Head Will Not Do2021-10-1446m5.8Unable to go to the authorities without revealing their secret, the crew needs to solve the mystery on their own. More bodies turn up, as they realize they’re being haunted and hunted.
4. Hot Shrimp Salad2021-10-1446m5.9Lennon uncovers secrets about her twin and begins to fear the worst about the true identity of the person murdering her friends. The local community is shocked by more murders.
5. Mukbang2021-10-2144m5.2The police question everyone in town with any connection to the victims. The crew think they know who is after them and hunt for evidence implicating the town eccentric.
6. Least You Had a Spare2021-10-2844m5.6More devastating truths are unearthed by Lennon as the crew frantically search for one of their own who has gone missing.
7. If Only Dogs Could Talk2021-11-0448m5.6The town races to find the killer before another victim is claimed. Calm seems to be restored as the killing stops until the police make a gruesome discovery.
8. Your Next Life Could Be So Much Happier2021-11-1158m4.9Lennon and her surviving friends confront painful truths from the past as the shocking truth of the killer's identity is finally revealed – with deadly consequences.

Cast

Top Billed Cast

Madison Iseman
Lennon / Alison
Bill Heck
Bruce
Brianne Tju
Margot
Zeke Goodman
Dylan
Ashley Moore
Riley
Fiona Rene
Lyla
Cassie Beck
Courtney
Brooke Bloom
Clara

Availability

Where To Watch Legally

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Streaming availability data provided by JustWatch.

FAQ

Frequently Asked Questions

Is I Know What You Did Last Summer available to watch online?

Yes - see the "Where to watch legally" section on this page for streaming, rental and purchase options.

How many seasons does I Know What You Did Last Summer have?

I Know What You Did Last Summer has 1 season and 8 episodes.

When did I Know What You Did Last Summer first air?

I Know What You Did Last Summer first aired in 2021.

Is I Know What You Did Last Summer still running?

I Know What You Did Last Summer's status on TMDB is: Canceled.

What genre is I Know What You Did Last Summer?

I Know What You Did Last Summer is classified as Mystery, Drama.