A new trailer for I Know What You Did Last Summer cast also features Chase Sui Wonders, Madelyn Cline, Lola Tung, Tyrig Withers, and Billy Campbell.
Now, Sony has dropped the I Know What You Did Last Summer trailer. Towards the beginning of the trailer, one of the new characters tries to settle down for a calming bath. Meanwhile, her significant other is downstairs, watching lights mysteriously turn on and off outside their home. He is then stabbed by a harpoon-style weapon before the mysterious assailant's ominous hook is revealed. After his death, the scene cuts forward to a group of young Southport residents that wonder if this is karma for what they did last summer, and they meet up with Hewitt and Prinze Jr. for help along the way.
What This Means For I Know What You Did Last Summer
The Movie Mixes Old And New Cast
The trailer highlights how the sequel will call upon and distinguish itself from its three predecessors in the horror series. The setting will carry over from the original, taking place in the seaside town of Southport, North Carolina. An image of two gravestones in the trailer recognizes the deaths that have previously occurred in the town. As early images also revealed, 2025's version of I Know What You Did Last Summer will feature the same iconic hook weapon, which has been an iconic element in the horror franchise.

I Worry The New I Know What You Did Last Summer Movie Will Make The Same Mistake As This 30% RT Horror Legacy Sequel
The latest update on the I Know What You Did Last Summer sequel makes me worry that it will make the same mistake as a 2022 horror legacy sequel.
At the same time, the movie will introduce a series of new characters to go about their horrific journey. The I Know What You Did Last Summer franchise has always featured ensemble casts, and this time will be no exception. Cleverly, the characters will call upon those who have survived Southport's previous horrors to help them figure out what is happening in their oceanside town. While Prinze Jr. and Hewitt feature in the new trailer, the extent of their appearances remains unclear.
Our Take On The I Know What You Did Last Summer Trailer
The Movie Looks Appealing
There is a charming goofiness to the I Know What You Did Last Summer trailer. Hewitt's character dramatically says "I just have one question...what did you do last summer?" in a title-drop moment. While this line is melodramatic, it adds a campy flare to the trailer that aligns with the cult classic original movie. This could lead to an appealing legacy sequel when I Know What You Did Last Summer releases on July 18.
Source: Sony

I Know What You Did Last Summer
- Release Date
- July 18, 2025
- Runtime
- 100 minutes
Cast
- Madelyn ClineDanica Richards
- Chase Sui WondersAva Brucks
- Jonah Hauer-KingMilo Griffin
- Tyriq WithersTeddy Spencer