'The Vampires Night Orgy' (1973) - León Klimovsky.

Highly respected horror film-maker León Klimovsky, arguably made few universally regarded classics, outside of his entirely superb 'Werewolf Shadow, but his no less appreciated 'The Vampire's Night Orgy' is another in a prolific, but largely hit-and-miss career of fright-making. A rickety coach slowly traverses a desolate, mountainous region transporting the anxious occupants to a town where all of them have recently secured employment, after a grave mishap, they decide to seek temporary shelter in a tiny isolated village in an especially harsh, inhospitable and unpopulated environment, hidden high in the barren hills, finding the location to be eerily deserted, they reluctantly enter the no less deserted tavern, whereby the weary travellers somewhat tentatively avail themselves of the amenities in these altogether macabre Marie Celeste confines, until much later the weird inhabitants of this misbegotten place return, and that very same night their ghoulish hosts harbour a grievous secret, suggesting that their seemingly benign smiles might disguise rather uncommonly sharp, infinitely less welcoming canines!

'The Vampire's Night Orgy' has more than enough lurid imagery to merit such a delightfully suggestive title, but along with its plentiful blood-letting, grisly dismemberments, sinfully slinky displays of the delectable Dyanik Zurakowska, there's an additional depth of oppressive doom, heightened by the palpably ominous, seemingly impenetrable mountain range that grimly encircles this nightmarish, vampire-infested village of the damned. Director Klimovsky successfully creates a series of memorably macabre moments as these poor, beleaguered travellers are gruesomely dispatched by these pallid, horribly grimacing ghouls, director Klimovsky's patent usage of slow-motion being especially effective in maintaining an alien, consistently threatening milieu that certainly goes some way to suggesting 'The Vampires Night Orgy' is one of the more essential Euro-cult titles, having some especially lively performances from the lovely Dyanik and her dashing hero Jack Taylor, both being splendidly menaced by the deliciously sinister succubus Helga Line!