Curse of the Crimson Altar (1968)

This might have been a bit better were it actually to feature more of Messrs Karloff and Lee on the screen, but for the most part is just consists of Mark Eden ("Manning") trying to track down his brother, whom he suspects may have been caught up in some occult goings on at a rural stately home. Certainly, there is plenty of drunken debauchery at the start (where don't they lick the Champagne from?) but once it gets into it's stride it all just follows a well trodden path with virtually nothing of note - certainly not scary, anyway, happening until the fire brigade arrive with lightning speed at the end. Beware the legend of the Black Witch - she might make you watch a sequel!