I Know What You Did Last Summer is a 2025 American slasher film directed by Jennifer Kaytin Robinson, who co-wrote the screenplay with Sam Lansky from a story by Leah McKendrick and Robinson. It is the fourth installment in the I Know What You Did Last Summer franchise and a sequel to I Still Know What You Did Last Summer (1998). The film stars Madelyn Cline, Chase Sui Wonders, Jonah Hauer-King, Tyriq Withers, Sarah Pidgeon, Billy Campbell, Gabbriette Bechtel, and Austin Nichols, with Freddie Prinze Jr., and Jennifer Love Hewitt reprising their roles as Ray Bronson and Julie James from the previous films. The plot takes place 27 years after the Tower Bay murders, when another hook-wielding killer appears and begins targeting a group of friends one year after they covered up a car crash in which they killed someone.