The 2025 reboot of I Know What You Did Last Summer brings a darker, modern twist to the classic teen slasher. Set in a coastal town, a new group of friends—Ava, Jordan, Lexi, and Chris—celebrate graduation with a wild night that ends in a tragic hit-and-run accident. Panicked, they vow to cover it up and move on with their lives.

A year later, they each receive a chilling message: “I know what you did.” As paranoia sets in, a hooded figure begins stalking them, picking them off one by one in increasingly brutal fashion. Tensions rise as secrets unravel, and it’s revealed that one of them was never innocent—and may have orchestrated the entire tragedy.

In a twist ending, the killer is unmasked as the sibling of the victim they thought was dead