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I Know What You Did Last Summer Season 1 poster

I Know What You Did Last Summer Season 1 Episode release dates & where to watch

Premiered

Thursday, October 14, 2021

Ended: Thursday, November 11, 2021

When does I Know What You Did Last Summer Season 1 come out?

I Know What You Did Last Summer Season 1 premiered Thursday, October 14, 2021 on Prime Video and ended Thursday, November 11, 2021. The season has 8 episodes.

Last updated

I Know What You Did Last Summer Season 1 release schedule

I Know What You Did Last Summer Season 1 episode release dates
Episode Release date

1. It's Thursday

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.

Thursday · 5 years ago

2. 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.

Thursday · 5 years ago

3. 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.

Thursday · 5 years ago

4. 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.

Thursday · 5 years ago

5. 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.

Thursday · 5 years ago

6. 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.

Thursday · 5 years ago

7. 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.

Thursday · 5 years ago

8. Your Next Life Could Be So Much Happier Finale

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.

Thursday · 4 years ago

I Know What You Did Last Summer Season 1 guest stars

  • Sonya Balmores

    Sonya Balmores

    Mel Gilbert

  • Spencer Sutherland

    Spencer Sutherland

    Dale

  • Eddie Kaulukukui

    Eddie Kaulukukui

    Carl Gilbert

  • Tiffany Kanoa

    Kid

  • Kekoa Kekumano

    Kekoa Kekumano

    Connor Davenport

  • Keola Simpson

    Keola Simpson

    Mr. Davenport

  • Sebastian Amoruso

    Sebastian Amoruso

    Johnny

  • Danielle Delaunay

    Danielle Delaunay

    Hannah Scanlon

  • Chrissie Fit

    Chrissie Fit

    Kelly Craft

  • Victoria K. Schmidt

    Officer Ulani Kalama

  • Jason Lee Hoy

    Jason Lee Hoy

    Kyle

  • Sterling Sulieman

    Sterling Sulieman

    Wade

  • Eric William Morris

    Eric William Morris

    Officer Doug Cruise

  • Maggie Lacey

    Maggie Lacey

    Helen

  • Joe Toro

    Joe Toro

    Bill

  • Duncan Kamakana

    Eric Craft

I Know What You Did Last Summer Season 1 FAQ

When does I Know What You Did Last Summer Season 1 come out?

I Know What You Did Last Summer Season 1 premiered Thursday, October 14, 2021 on Prime Video.

How many episodes are in I Know What You Did Last Summer Season 1?

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

Are new episodes of I Know What You Did Last Summer Season 1 released weekly?

New episodes are released weekly.

When is the I Know What You Did Last Summer Season 1 finale?

The I Know What You Did Last Summer Season 1 finale (Episode 8) aired Thursday, November 11, 2021.

How do I get notified when new I Know What You Did Last Summer Season 1 episodes are released?

Download the Streambay app and follow I Know What You Did Last Summer. You'll get a push notification the moment each new episode is out.

Never miss I Know What You Did Last Summer Season 1.

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