A 43-minute condensation of this silent film can be found as an Extra Feature on the Kino Video DVD of The Cabinet of Dr. Caligari (1920). A full-length version is stored at the Munich City Film Museum archive in Germany. A VHS transfer of a full length version (with French intertitles) exists. A copy can be found on YouTube.
The original subtitle was "The Tragedy of the Strange House". Nowhere in the film does it imply that Genuine is a vampire. The character is actually a succubus, not a vampire.