25 Films That Intentionally Spoil Other Films

4. Scream (1996)

With Scream, Wes Craven broke the original slasher mould and forged a new one, bringing the popular '80s subgenre into the 1990s and back from the dead. The story of a ghost-faced killer haunting the students of Woodsboro High set itself apart from contemporaries and all that had come before by being persistently self-referential, calling attention to horror movie tropes, constantly subverting expectations, and keeping a running commentary on itself, primarily via film buff Randy Meeks (Jamie Kennedy).

Not content to just mock and play with its forebears, however, Scream outright spoils one of the big ‘uns in its intro. When Casey Becker (Drew Barrymore) is trapped home alone inside her house with the killer on the phone, he taunts her with a horror movie quiz. To save the life of her boyfriend, who is tied up on the patio, she must answer Ghostface’s question: "Name the killer in Friday the 13th?"

Casey says Jason, and despite attempting to shout Ghostface down when he says she’s wrong, he slays her beau. Because, yes, Jason’s mother, Mrs. Voorhees, was the original killer. Ghostface knew it, Craven knew it, and chances are you knew it when you were shouting at the screen in disbelief.