I watched this as one of the movies in Rhino's Horrible Horrors Vol. 1 box set. While it wasn't entirely horrible, it was pretty poor.
It starts off with some narration (which is absent for the rest of the movie), and a scene of a monk turning Satanist in the 1300s or something like that. Then in the present day, the death of a priest who was secretly a Satanist prompts a nun to go undercover to try to infiltrate the Satanists. She isn't given much to do for most of the movie, though.
There's a young woman who had been abused by her father and a group of child pornographers who plans to get married. Apart from the sexual abuse as a child, she's never had sex. Her grandfather is one of the Satanists and plans to use her in a sacrifice. He would like to take over the group.
There's also the Satanist's goon, who goes about like a slasher killing some people, abducting others. The cinematography and editing and so on aren't incompetent, but the acting and story are pretty lifeless. Surprisingly, there's no nudity. There's not a whole lot of blood, but there is some, and towards the end some people rapidly age or melt, I'm not sure.
