The Mask Of Satan (a.k.a Black Sunday) (La Maschera Del Demonio) (1960)

  In 1630 Russia, Princess Asa is accused and sentenced for practising witchcraft. While on the stake, she swears to return from the dead and take revenge. 200 years later, she returns and tries to possess the body of her look-alike descendant with the aid of her servant. Who can stop her?
  This is Mario Bava's (official) debut and a true milestone in Italian Gothic horror films.It clearly paves the way for what is to follow, both in Bava's career but also in European Horrorsploitation. The Gothic element in the movie's mood is incomparable (black-and-white plays a huge role in that) and the theme reflects the 60's fixation with witches and satan.
  Barbara Steele everybody! This lady has this weird look in her eyes, something like 'I will seduce,but your soul belongs to Satan after that' combined with that Italian classiness that really nail you to your chair! Of course the rest of the cast (Andrea Checchi, John Richardson etc) bind perfectly with the movie's theme and seem to work perfectly under the guidance of Master Bava. Not a horror film per se (don't expect to get scared) but it flows as gently as if it was a horror novel you were reading.
Must watch this : in November,on a cold and rainy night with a glass of red wine and an Italian friend.
Trailer
http://www.imdb.com/title/tt0054067/

You're fucked!

Look at the title!

Aw yiss!