The failure of the original copyright holder to renew the film's copyright resulted in it falling into public domain, meaning that virtually anyone could duplicate and sell a VHS/DVD copy of the film. Therefore, many of the versions of this film available on the market are either severely (and usually badly) edited and/or of extremely poor quality, having been duped from second- or third-generation (or more) copies of the film.
Prof. Frederick Brenner, alias Karl Wagner:
Hmm, these mildewed skeletons who sleep so quietly now were once my partners, like Stratton.
Prof. Frederick Brenner, alias Karl Wagner: Doc, how often have I told you to keep that cat from desecrating my graves?
The story takes place in New York City, but the establishing shot of the college campus where the professor teaches is that of the University of California in Berkeley.