Vampyr

After Allan Gray (Julian West) rents a room near Courtempierre in France, strange events unfold: An elderly man leaves a packet on Gray's table, and shadows that are seemingly alive lead him toward a castle. At a nearby manor, he witnesses the same man being murdered and gradually learns about the curse of the Vampyr. As Gray faces the horrors of the castle, he attempts to save the victim's daughters -- one of whom, Léone (Jan Hieronimko), has fallen ill after mysteriously being bitten.

"Vampyr" (also known as "The Strange Adventure of David Gray") is in the public domain. The film was released in 1932 and its copyright expired, so it is now freely available for anyone to use or distribute without permission or payment of royalties.