I’m watching late-night Belgian TV and catch about half of a moderately gruesome film. Unfortunately I doze off before the final credits. Nothing came to light on IMDB. Here’s what I remember:
a group of attractive teenagers turn up in a small US town
before I started watching, they had apparently taken drugs and rescued an attractive older woman from some problem (road accident?)
they are gradually captured by a devil worship cult, including a ‘priest’, local shopkeepers and the aforementioned older woman
a couple of teenagers are tied to an ‘altar’ and sacrificed to the Devil in a large red barn, before one ‘left-for-dead’ teen rescues the others
It had the air of a US film (US actors + settings).
However it wasn’t a big budget (I didn’t recognise any actors and there were no expensive locations or effects.)
Not many clues from the fashion - perhaps 70s?
I have a vague memory that two of the female teen actresses had the same surname - ‘Lyon’.
Unfortunately my hotel picks up Belgian, UK, French, Italian and Dutch TV channels, so it could have been any of those (which makes it tricky to look up TV listings…
I took the liberty of posting your question on the IMDB board, and one of the experts posited that it might be “Devil’s Prey” (2001). The IMDB entry doesn’t have a lot of info, but the user comments on Amazon.com might give you a better idea if this is it:
Devil’s Prey is also what I came up with. The movie has a group of teens fleeing murderous Satanists who prowl raves looking for victims, a wounded woman on the roadside, a town called Howards Point, a helpful minister, and a doubting sheriff.