I KNOW WHAT YOU DID LAST SUMMER is a 2025 horror slasher film directed by Jennifer Kaytin Robinson, who co-wrote the screenplay with Sam Lansky after an initial draft with Leah McKendrick. It is the fourth film in the I Know What You Did Last Summer franchise, serving as a direct sequel to I Still Know What You Did Last Summer (1998).
A group of friends are terrorized by a stalker who knows about a gruesome incident from their past.
The cast includes Madelyn Cline, Chase Sui Wonders, Jonah Hauer-King, Tyriq Withers, Sarah Pidgeon, Billy Campbell, Gabbriette Bechtel, Austin Nichols, Lola Tung, Nicholas Alexander Chavez, Freddie Prinze Jr., and Jennifer Love Hewitt.
I KNOW WHAT YOU DID LAST SUMMER is set to debut in theaters July 18th, courtesy of Sony Pictures Releasing. Watch the official trailer below.