Mystery

When Does I Know What You Did Last Summer Season 2 Come Out? Is It Renewed?

No one is safe.

I Know What You Did Last Summer was cancelled — there is no Season 2.

TMDB

6.4

Seasons

1

Episodes

8

I Know What You Did Last Summer poster

Diagnostics

Genres
Mystery, Drama
First aired
2021-10-14
Last aired
2021-11-11
Runtime
49 min
Rated
TV-MA

Predictive Logic Analysis

I Know What You Did Last Summer has been cancelled. The series will not continue, and Season 2 is not in development.

What is I Know What You Did Last Summer about?

I Know What You Did Last Summer lands on Prime Video as a slick, competent teen mystery that knows exactly what it is doing, even if what it is doing feels familiar. A group of friends in Hawaii carries the weight of a terrible accident from the previous year, and when threats begin arriving, they realize someone from their past has decided vengeance is overdue. The show understands its audience wants tension, betrayal, and the constant question of who might betray whom next, and it delivers on that premise with clean editing and a cast that commits to the drama.

What makes the show work is its willingness to treat the material seriously. There is real dread here rather than camp or irony. The Hawaiian setting, sunny and picturesque, creates an effective contrast with the dark motivations lurking beneath the surface. The eight-episode season moves quickly, which is both a strength and a weakness. It keeps you watching because something new always seems to be happening, but it also means character moments sometimes get swallowed by plot mechanics. Madison Iseman carries much of the emotional weight as Lennon, and her performance grounds scenes that might otherwise feel like pure thriller machinery.

The critical and audience reception was mixed. Some viewers appreciated its straightforward approach to the mystery formula, while others found it derivative and frustration with the plotting. The show does not reinvent the wheel of teen mystery television, and it does not pretend to. What it does is execute the formula competently enough that if you enjoy this kind of story, there is enough here to sustain eight episodes.

It sits in the company of shows like Pretty Little Liars and Riverdale without quite matching their cultural footprint or willingness to veer into genuine weirdness. I Know What You Did Last Summer is the show you watch when you want a mystery that will not complicate your evening, one where the answer to "who is behind this" matters more than how the show gets there.

Created by Sara Goodman

Themes

based on novel or booktwin sisterslashermurder mysteryhorror

Is I Know What You Did Last Summer renewed or cancelled?

Working against it

high

The series is listed as cancelled

Why was I Know What You Did Last Summer cancelled?

Prime Video's adaptation of I Know What You Did Last Summer arrived in October 2021 with modest fanfare and departed before Halloween had even faded from memory. The show's eight-episode first season barely made a mark on the cultural conversation, and audience engagement numbers evidently did not justify the cost of producing a second chapter. For a streaming service that greenlights prestige projects alongside algorithm-friendly genre fare, a mystery thriller needs to either catch fire immediately or show the kind of sustained viewership that suggests a built-in audience will return. This show did neither.

The cancellation also reflects Prime Video's shifting strategy toward genre content in that period. The streamer was beginning to consolidate its focus, moving away from the middle tier of programming that doesn't dominate the platform or generate water-cooler momentum. An adaptation of a familiar property like I Know What You Did Last Summer carries expectations, but expectations alone don't sustain greenlight decisions at a major streaming platform. Without compelling viewership data or critical acclaim to anchor it, the show became expendable.

I Know What You Did Last Summer Season 2 Release Date

No release is expected. I Know What You Did Last Summer was cancelled, ending the series.

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Best & worst episodes

I Know What You Did Last Summer seasons

Season 12021 · 8 ep
  • 1. It's Thursday2021-10-14 · ★ 6.7
  • 2. It's Not Just for Dog Shit2021-10-14 · ★ 7.0
  • 3. A Gorilla Head Will Not Do2021-10-14 · ★ 7.0
  • 4. Hot Shrimp Salad2021-10-14 · ★ 7.1
  • 5. Mukbang2021-10-21 · ★ 6.9
  • 6. Least You Had a Spare2021-10-28 · ★ 7.0
  • 7. If Only Dogs Could Talk2021-11-04 · ★ 7.0
  • 8. Your Next Life Could Be So Much Happier2021-11-11 · ★ 6.6

I Know What You Did Last Summer trailer

I Know What You Did Last Summer cast

View all cast →
Madison Iseman

Madison Iseman

Lennon / Alison

Bill Heck

Bill Heck

Bruce

Brianne Tju

Brianne Tju

Margot

Zeke Goodman

Zeke Goodman

Dylan

Ashley Moore

Ashley Moore

Riley

Fiona Rene

Fiona Rene

Lyla

Cassie Beck

Cassie Beck

Courtney

Brooke Bloom

Brooke Bloom

Clara

Where to watch I Know What You Did Last Summer

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AI Verdict

Cancelled0%high confidence
0%renewal
renewal probability
Verdict history0% → 0%
May 17May 17

I Know What You Did Last Summer has been cancelled. No further seasons are planned.

Verdict updated 1 month ago

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    Frequently asked

    When does I Know What You Did Last Summer Season 2 come out?
    I Know What You Did Last Summer was cancelled — there is no Season 2.
    Is I Know What You Did Last Summer renewed or cancelled?
    I Know What You Did Last Summer has been cancelled. No further seasons are planned.
    Why was I Know What You Did Last Summer cancelled?
    Prime Video's adaptation of I Know What You Did Last Summer arrived in October 2021 with modest fanfare and departed before Halloween had even faded from memory. The show's eight-episode first season barely made a mark on the cultural conversation, and audience engagement numbers evidently did not justify the cost of producing a second chapter. For a streaming service that greenlights prestige projects alongside algorithm-friendly genre fare, a mystery thriller needs to either catch fire immediately or show the kind of sustained viewership that suggests a built-in audience will return. This show did neither.
    How many seasons of I Know What You Did Last Summer are there?
    I Know What You Did Last Summer has aired 1 season so far.
    How many episodes of I Know What You Did Last Summer are there?
    There are 8 episodes of I Know What You Did Last Summer across 1 season.
    Who created I Know What You Did Last Summer?
    I Know What You Did Last Summer was created by Sara Goodman.
    Where can I watch I Know What You Did Last Summer?
    I Know What You Did Last Summer is available to stream on Amazon Prime Video and Amazon Prime Video with Ads.