Mansion of Madness
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 asylum completely cut off from civilization and presided over by the ultimate madman. Innocent people have been savagely chained, tortured and stuck in glass cages, then forced to take part in gruesome games of ritual slaughter.
Trivia
Despite being a Mexican production and having a mostly Mexican cast and crew, this movie was filmed in English, then dubbed into Spanish for Mexican cinemas. The version released in USA, retitled «Dr. Tarr’s Torture Dungeon», is actually the original version (not a dub), but in a cut form.