I didn't really realise how much horror is on TV until I worked out what films I'd ended up watching late night. Hostel was one I saw bits of, then finally got to see all the way through.
The first film is about a Hostel in Slovakia where people are abducted and sold off to be tortured by people as nasty as they are rich. There is a fair amount of gore, but essentially it is a gripping storyline of being abducted and the fear instilled, exploring human nature and what we all hope isn't in us.
The first features the great song by Team "Drzim Ti Miesto" which you can get off mp3downloads and I strongly recommend.
The second film revisits the first location, except three young females. It covers much the same ground, not as good as the first but still has its merits.
The third film seems to hang on to the first and indeed second, and it is not a surprise none followed. It has a somewhat convaluted plot and makes a hash of attempted twists, if you liked the first then buy all three, or just buy the first and "Drizm Ti Miesto"