It's astonishing: this Italian B-movie is very close to 18th century Gothic novels like the classic "The Castle of Otranto" by Horace Walpole (1765). Like in Walpoles novel the plot centers around a young woman, freshly married to a count and castle-owner. Now, the count may or may not be the brute who bestially murders women at nightfall - in the film the solution of this riddle is saved for the final showdown, while in the book it becomes obvious pretty soon, that the count is a despot and sinner. The main part of the movie features the camera tiptoeing behind the fragile woman, who, genre-typically seems even more vulnerable (and visible for an enemy) in her thin, white, silky nightgown. Like Isabella, the lead in Walpoles book, she wanders around in an subterranean labyrinth of vaults and crypts, well aware of the fact that some dark creature is down there with her in the dark. Well: for today's taste this film with it's crude special effects of miniature castle-views and rubber-scars in Christopher Lee's face is more up for laughter than for a real scare. Still it has a special atmosphere ... Interesting trivia: The Italian Original version (called "La Vergine di Norimberga" - "The Nuremberg Vergin") implies some subplot about a former Nazi-officer who was caught plotting against Adolf Hitler. As a punishment his face was mutilated, making him look like the Phantom of the Opera. In the DVD-version that is distributed in Austria and Germany (and which follows the German dubbed movie-version from the 60s) this plot is completely altered, leaving out any Nazi-references, even changing the names of the "bad guys" from "Fritz", etc. in the original to British sounding names like "Fred", maybe trying to catch up with the German "Edgar Wallace" Brit-scare-boom of that time. Seems the Germans are afraid of what in other countries is referred to as German Angst ...