who is the killer in i know what you did last summer 2025

The killer in the 2020 film "I Know What You Did Last Summer" is revealed to be Stevie Ward. She killed members of the friend group because the man they accidentally killed the previous summer was her best friend from rehab. Additionally, it is revealed that Ray Bronson, Stevie's boss and a father figure to her, acted as her accomplice and mastermind behind the killings. Ray sought revenge against the friend group and the town of Southport for erasing the 1997 murders to attract more residents and tourists. In the climax, Ray is fatally shot with a harpoon by Ava, a survivor from the friend group, after trying to stab Julie James, another survivor.