My recollection of this movie is very poor, it's been easily 10 years since I seen it...
It's an American movie from the 1980s.
I think the story line revolves around a bunch of paranormal researchers / scientists that are investigating a relic found in a church. The movie takes place in that church.
Loads of freaky stuff happens, I vaguely remember water pooling on the ceiling.
Satan is definitely involved at some stage.
The female lead is sucked through a mirror, she never makes it out. I think it's established at some point that mirrors are a gateway to Hell.
At the very end, when the good guys have won, one of them reaches out to touch a mirror, I think he can hear the female lead calling for help. And that's were the movie ends.
As far as I can remember, there are no notable actors in it.
If someone can help me out, I guarantee * I'll send you some gold in the post.
* Not a guarantee
