**_Shocking bits and nudity can't make up for a flat story with a tepid close_** In London, an occult novelist (Richard Widmark) is asked to protect a man's daughter, a young nun (Nastassja Kinski), from a cult of satanists led by a towering man who seems to possess supernatural powers (Christopher Lee). They require her for some diabolical ritual. Honor Blackman has a peripheral role. The story of "To the…