![The Big Sleep](https://image.tmdb.org/t/p/w185/pZUBI77RMu652QmtWL9RBWF1uO6.jpg)
A scientist working on cures for rare afflictions, such as a bone softening agent made from molds to allow him to correct the spinal deformity of his nurse, finds the physical causes of lycanthropy in wolf-man Larry Talbot and of vampirism in Count Dracula, but himself becomes afflicted with homicidal madness while exchanging blood with Dracula.