0
I saw this movie in the late 80's or early 90's. Here's what I remember:
A group of teens are walking and are approached by somebody (I think it was a shady looking character) and are handed free tickets to a horror movie screening. They end up going into the theater and while everyone is sitting watching the movie the doors to the theater are locked. Soon, all hell breaks loose and the teens from the beginning try to find a way out. Somehow they end up crawling through air ducts and if I remember correctly, one of the guys in the air duct was bitten or scratched by one of the "things". I remember there being a man wearing a creepy costume (kinda like knight's armor) on a horse. Everyone thought it was a marketing tool for the movie. I'm not sure if the movie they were watching in the theater caused the people to start going nuts or if people were attacked by the "organizers" and infected and so on. I'm guessing the ones responsible for luring the people in and screening the movie were demons of some sort. That's all I have...I really hope someone has seen this movie! Not knowing the name of it has been bugging me for years.