At the peak of his ‘80s excess, Italian sleaze maestro Bruno Mattei stunned audiences with this Nunsploitation shocker about a series of brutal murders in a depraved convent. And while his cinematic legacy may be controversial, Mattei delivers a surprisingly stylized yet undeniably blasphemous orgy of stabbings, stigmata, Satanism, sexual violence and graphic savagery that ranks among his best.