A man and wife are terrorized by Mad Scientist Dr. Callistratus who was executed but has returned to life with a heart transplant. Along with his crippled assistant Carl, the 'anemic' Mad Scientist, believed to be a vampire, conducts blood deficiency research on the inmates of a prison hospital for the criminally insane to sustain his return to life.
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|Donald Wolfit||Doctor Callistratus|
|Vincent Ball||Dr. John Pierre|
|Barbara Shelley||Madeleine Duval|
|Robert S. Baker||Producer|
|Stanley Black||Original Music Composer||