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I Know What You Did Last Summer

  • 45
  • 2021-2021
  • 1 season
  • Amazon Prime Video
  • Drama, Horror, Suspense
  • TV-MA

One year after the fatal car accident that haunted their graduation night, a group of teenagers find themselves bound together by a dark secret at the hands of a brutal killer who stalks their every move. As they try to piece together who's after them, they reveal the dark side of their seemingly perfect town. Everyone is hiding something, and uncovering the wrong secret could be deadly.

Season 1 Episode Guide

8 Episodes 2021

Episode 1

It's Thursday

Fri, Oct 15, 2021 49 mins

Lennon 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.

I Know What You Did Last Summer Season 1 It's Thursday

Episode 2

It's Not Just for Dog Shit

Fri, Oct 15, 2021 48 mins

The estranged friends reunite to try and figure who might have revealed their secret or who else knows what they did – which leads to murder.

I Know What You Did Last Summer Season 1 It's Not Just for Dog Shit

Episode 3

A Gorilla Head Will Not Do

Fri, Oct 15, 2021 45 mins

Unable 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.

I Know What You Did Last Summer Season 1 A Gorilla Head Will Not Do
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Episode 4

Hot Shrimp Salad

Fri, Oct 15, 2021 44 mins

Lennon 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.

I Know What You Did Last Summer Season 1 Hot Shrimp Salad

Episode 5

Mukbang

Fri, Oct 22, 2021 44 mins

The 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.

I Know What You Did Last Summer Season 1 Mukbang

Episode 6

Least You Had a Spare

Fri, Oct 29, 2021 44 mins

More devastating truths are unearthed by Lennon as the crew frantically search for one of their own who has gone missing.

Episode 7

If Only Dogs Could Talk

Fri, Nov 5, 2021 48 mins

The 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.

Episode 8

Your Next Life Could Be So Much Happier

Fri, Nov 12, 2021 58 mins

Lennon 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.

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