Having read short reviews of this book, I expected an undiscovered gem, Jules Verne's take on DRACULA, and found it instead slight and tedious, a short story worth of drama drawn out to 190 pages. It's easy to make this sound interesting, being about the clash of superstition and technology, set around a mysterious castle the locals believe haunted. But don't be fooled. This may have a bit of "gothic" atmosphere, but to present-day readers it does not deliver on its supernatural aura. Today, this is a footnote, interesting mainly for the 19th century description of still uninvented, but now commonplace, technology.