By Marquee Editorial3 entries
The I Know What You Did Last Summer franchise consists of four horror movies centered around groups of teenagers dealing with fatal accidents, deadly secrets, and stalkers. The entries connect through similar premises involving concealed incidents and subsequent haunting by unknown figures one year later. Watching the movies in release order provides the chronological progression of the films as they were released from 1997 to 2025.

I Know What You Did Last Summer
Movie, 1997
Start here with the 1997 film where four teens make a fatal mistake dumping a body into the sea and face a hook-handed stalker one year later.

I Still Know What You Did Last Summer
Movie, 1998
Watch this 1998 sequel second, following Julie James as she is haunted by images of the Fisherman while taking a trip to the Bahamas.

Read what its ending meant, or search for another franchise.
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I'll Always Know What You Did Last Summer
Movie, 2006
Place this 2006 film third, shifting focus to teenagers in Colorado who keep a July 4th prank accident a secret from authorities.
Finish with the 2025 movie, which features five friends covering up a deadly car accident and facing a truth a year later.
| # | Title | Type | Year | Rating | Guide |
|---|---|---|---|---|---|
| 1 | I Know What You Did Last Summer | Movie | 1997 | ★ 6.0 | Not yet |
| 2 | I Still Know What You Did Last Summer | Movie | 1998 | ★ 5.4 | Not yet |
| 3 | I'll Always Know What You Did Last Summer | Movie | 2006 | ★ 4.2 | Not yet |
Average audience ratings, in watch order.
Start with the 1997 original movie, which introduces the premise of teens covering up an accident and being stalked one year later.
Following the release order from 1997 to 2025 allows you to watch the films in the exact sequence they were released to the public.
None of the entries need to be skipped if you want to watch all four films included in the franchise's release history.
Watch in this order: 1. I Know What You Did Last Summer, 2. I Still Know What You Did Last Summer, 3. I'll Always Know What You Did Last Summer.
This guide lists 3 entries, released between 1997 and 2006.
I Know What You Did Last Summer has the highest average rating in this guide, at 6.0 out of 10.