Season 1 is the first season of Amazon Prime Video's I Know What You Did Last Summer.
The first four episodes were released on October 15, with new episodes available each subsequent Friday till the season finale on November 12, 2021.
Synopsis[]
One year after the fatal car accident that haunted their graduation night, a group of teenagers find themselves bound together by a dark secret and stalked by a brutal killer. As they try to piece together who’s after them, they reveal the dark side of their seemingly perfect Hawaiian town—and themselves. Everyone is hiding something, and uncovering the wrong secret could be deadly.
Cast[]
Main[]
- Madison Iseman as Lennon Grant / Allison Grant
- Brianne Tju as Margot
- Ezekiel Goodman as Dylan
- Ashley Moore as Riley
- Sebastian Amoruso as Johnny
- Fiona Rene as Lyla
- Cassie Beck as Courtney
- Brooke Bloom as Clara
- Bill Heck as Bruce
Recurring[]
- Sonya Balmores as Mei, Margot's mother who encourages her to be an influencer
- Danielle Delaunay as Hannah, Dylan's hippie-ish mother
- Chrissie Fit as Kelly, Eric's ex-wife
- Victoria Schmidt as Ulani Kalama, a police officer who works with Lyla
- Spencer Sutherland as Dale, a young man from the village who saw Lennon's group the night of the event.
Episodes[]
| Image | Episode Information |
|---|---|
|
It's Thursday
|
| After successfully finishing her freshmen year of college, 19 year old Lennon Grants returns home for the summer, only to find herself being stalked for an fatal accident that happened a year earlier. | |
|
It's Not Just For Dog Shit
|
| 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. | |
|
A Gorilla Head Will Not Do
|
| 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. | |
|
Hot Shrimp Salad
|
| 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. | |
|
Mukbang
|
| 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. | |
|
Least You Had A Spare
|
| More devastating truths are unearthed by Lennon as the crew frantically search for one of their own who has gone missing. | |
|
If Only Dogs Could Talk
|
| 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. | |
|
Your Next Life Could Be So Much Happier
|
| 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. | |
Notes[]
- The first series teaser was released on September 15, 2021.
Gallery[]
Images[]
Videos[]
I Know What You Did Last Summer - Official Trailer - Prime Video
I Know What You Did Last Summer - Official Teaser - Prime Video
I Know What You Did Last Summer – Cast Trailer Reaction - Prime Video
I Know What You Did Last Summer - Exclusive Clip - Prime Video