AllMovie

This lurid Italian production is set in a convent with a dark history, beginning with the death of the Mother Superior and continuing several years later with a series of unexplained murders. When an elderly priest is called in to investigate the deaths, the current Mother Superior (Franca Stoppi) tries to stop him at all costs. It is eventually revealed that the nuns are harboring the daughter of Satan in their midst, who has enslaved them to do her evil bidding and is capable of destroying all who stand in her path. Truly disgusting scenes abound, from gory murders to blood-spurting stigmata, combined with Exorcist-style demonic displays and more clerical depravities than Ken Russell's The Devils. To top things off there's even a zombie-filled climax.