Formidable Sister ``Emtee'' Dempsey heads the tiny remnant of the Order of Martha and Mary in Chicago, where an ambitious prosecutor is attempting to prove that deceased powerful, shady entrepreneur Iggy Moran had killed his young mistress Marilyn Derecho. Iggy's daughter Donna, once Marilyn's best friend, now a Carmelite nun in St. Louis, has come to Chicago to testify, staying with the three nuns of the Martha and Mary order in their Walton St. house--from which she disappears one early morning. The killing of salesman B.G. Briggs, peripherally involved in Donna's arrival at the Chicago airport, complicates the search for the missing nun. Her brother Randy and sister Lenore, now married to Joe Cremona, who'd once pursued Donna, deny knowing her whereabouts. The circumstances of her reappearance sets off a citywide scandal, a false arrest and a suicide until Emtee, with help from Sister Kim and TV reporter Linda Pastorini, gets it all straightened out. A contrived plot with some intriguing aspects that diminish to flat anticlimax in a welter of subplots and domestic trivia. Sporadically interesting and better than most in this series The Veil of Ignorance, etc.).