Other mistake: Despite the noise of the demon in the house, the tornado clouds outside, the flashing lights from the demon exploding and the fireworks in the sky - not a single neighbor is anywhere to be seen. Even after daylight breaks the neighborhood is a ghost town as we pan away from the actors.
The Gate (1987)
1 mistake - chronological order
Directed by: Tibor Takacs
Starring: Stephen Dorff, Kelly Rowan, Christa Denton, Louis Tripp
Genres: Horror
Terrence 'Terry' Chandler: We accidently summoned demons who used to rule the universe to come and take over the world.
Glen: Yeah, we found out about it from, uh, one of Terry's albums.