I Know What You Did Last Summer Goes Full MCU With Its Cameos

Photo: Matt Kennedy

Spoilers ahead for 2025’s I Know What You Did Last Summer.

On paper, slashers and superhero movies don’t have much in common — one’s blood-soaked and the other is largely bloodless. But there’s always been a little more overlap than you might expect, particularly as both genres have given way to decade-spanning franchises. The extended universe of slasher films is, of course, far more disparate than anything cooked up by Marvel or DC, but it’s nearly as littered with lore and Easter eggs.