The original French title was Le Château des Carpathes and in English there are some alternate titles, such as The Castle of the Carpathians, The Castle in Transylvania, and Rodolphe de Gortz; or the Castle of the Carpathians.
In the village of Werst in the Carpathian mountains of Transylvania (then part of Austria-Hungary), some mysterious things are occurring and the villagers believe that Chort (the devil) occupies the castle. A visitor to the region, Count Franz de Télek, is intrigued by the stories and decides to go to the castle and investigate. He finds that the owner of the castle is Baron Rodolphe de Gortz, with whom he is acquainted; years earlier, they were rivals for the affections of the celebrated Italian prima donna La Stilla. The Count thought that La Stilla was dead, but he sees her image and hears her voice coming from the castle. It is later revealed that it was only a projected still image accompanying a high-quality phonograph recording.
Shah, Raj (2014). "Counterfeit Castles: The Age of Mechanical Reproduction in Bram Stoker's Dracula and Jules Verne's Le Château des Carpathes". Texas Studies in Literature and Language56 (4): 428–71. doi:10.1353/tsl.2014.0018.