Revealing mistake: When the killer is putting masks on in front of Maggie, you can see the dead body of Tina hanging behind Maggie. The dead body moves / shakes / breathes many times throughout the scene.
Popcorn (1991)
1 revealing mistake
Directed by: Mark Herrier, Alan Ormsby
Starring: Dee Wallace, Jill Schoelen, Derek Rydall, Tom Villard
Genres: Horror
Continuity mistake: When "Tina" ties up Bud in his wheelchair, she puts a belt around his body. The belt shifts/rotates around his body between shots (you can tell by a patch on the belt, which moves around).