Does anyone remember this movie? I can’t think of the name! :)?

I saw this movie ages ago, am trying to look it up but can't think of the title nor the actors' names. It's about a man whose wife was killed many years ago and he was thought to have been dead, too, but now he's back for revenge. He dresses in black, lives alone in a huge house though to have been deserted, plays an organ that lifts up from a basement where his wife's remains lie in a coffin. I think he is disfigured so he never shows his face or even wears a mask, his clothes and the whole setting rather remind or Dracula or something like that. At the end of the movie he lies in the other coffin next to his wife. I also remember some glass pipes with some strange liquid (was it blood or was it something green, maybe some acid, I forgot) moving slowly through the pipes and than dripping onto something. It's a very old movie, I was very young when I saw it on TV so I can only get bits and piece from the memory. Can anyone help with the title? Thanks!
Yes, guirion, thank you, that's the one! That was very quick! Vulnavia!

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