The Demons
Les démons (original)
A group of nun’s become possessed by demons and are then tortured in a dungeon of horrors during the inquisition.
Starring Anne Libert, Carmen Yazalde, Doris Thomas, Karin Field, Jahangir Ghaffari, Luis Barboo, Howard Vernon, Alberto Dalbés, Rosa Palomar, Andrea Montchal
Watch "The Demons" on Amazon released in 1973. It's a horror and drama movie, and has a rating of 5.1 out of 10 from Imdb which is fairly okay for this kind of movie, and is currently only available for purchase or rent.