The Vampire Bat takes a different route from most other vampire films of its day and there is as much science in the story as their is supertition. In this film though the science is no bad thing because where there is science there is usually a scientist and scientists often need an assitant. In this film the assistant, Ruth Bertin, is played by the lovely Fay Wray who is also the love interest of the local police chief, Karl Brettschneider and when Karl's hands are not full with his investigtion his arms are filled with Ruth. Busy man!