# Where to watch I Know What You Did Last Summer (2021) in the UK

> I Know What You Did Last Summer (2021) is currently available to stream in the UK on Amazon Prime Video and Amazon Prime Video with Ads. Last verified on 13 May 2026 by ScreenSearch.

**Type:** TV series  
**Year:** 2021  
**Runtime:** 49 minutes per episode  
**TMDB rating:** 6.4/10  
**Genres:** Mystery, Drama  
**Seasons:** 1  
**Region:** United Kingdom (GB)  
**Last verified:** 13 May 2026 (2026-05-13T21:41:04.684Z)  

## Synopsis

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.

## Streaming options in the United Kingdom

### Stream (subscription)

- [Amazon Prime Video](https://www.amazon.co.uk/s?k=I%20Know%20What%20You%20Did%20Last%20Summer&i=instant-video)
- [Amazon Prime Video with Ads](https://www.amazon.co.uk/s?k=I%20Know%20What%20You%20Did%20Last%20Summer&i=instant-video)

## Frequently asked questions

**Where can I stream I Know What You Did Last Summer in the UK?**

I Know What You Did Last Summer (2021) is currently included in subscriptions to Amazon Prime Video and Amazon Prime Video with Ads in the United Kingdom. Sign-in is required to play. Streaming licences change occasionally — ScreenSearch refreshes its data daily.

**Are all seasons of I Know What You Did Last Summer on the same service?**

Not always — TV licensing is sometimes negotiated season by season. ScreenSearch shows availability across all seasons on the title's page; for season-specific availability, look at the season picker inside the search dialog.

**Is I Know What You Did Last Summer on Netflix, Disney+ or Amazon Prime Video in the UK?**

I Know What You Did Last Summer is currently included with: Amazon Prime Video and Amazon Prime Video with Ads.

**How accurate is this TV series's availability data?**

Availability is sourced from The Movie Database (TMDB), which in turn pulls from JustWatch. Listings are refreshed daily. For purchase decisions, the provider's own site is the source of truth.

## Sources

- Streaming availability: The Movie Database (TMDB), refreshed daily.
- Underlying licensing data: JustWatch.
- Canonical URL: https://www.screensearch.co.uk/watch/tv/129680/i-know-what-you-did-last-summer-2021
- Poster image: https://image.tmdb.org/t/p/w500/udvw5tHwEu8VI7e07qpVLZAw8o2.jpg
- JSON variant: https://www.screensearch.co.uk/watch/tv/129680/i-know-what-you-did-last-summer-2021.json

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