Based on an Edgar Allen Poe story, a mysterious man is sent deep into the forest to investigate the bizarre behavior of the notorious Dr. Tarr. What he stumbles upon is the doctor’s torture dungeon, a hellish insane asylum completely cut off from civilization and presided over by the ultimate madman. The inmates of the insane asylum have taken over the institution, imprisoned the doctors and staff; These people have been savagely chained, tortured and stuck in glass cages, then forced to take part in gruesome games of ritual slaughter. Starring Claudio Brook, Arthur Hansel, and Ellen Sherman. This seems like a British film but it is actually a Mexican movie that was filmed in English. Also called House of Madness.