At the start of Agatha-winner Churchill's middling 16th cozy to feature Chicago-area amateur sleuth Jane Jeffry (after 2004's A Midsummer Night's Scream
), Jane and her best friend, Shelley, decide to take a class on women's safety at the urging of Jane's long-time beau, Mel. Before the course is concluded, their teacher, Miss Welbourne, is murdered by a blow to the head. Jane's personal life overshadows the search for the killer: she and Mel decide to get married, so there's a wedding to plan, a house addition to design and an annoying almost-mother-in-law to handle. The domestic escapades make for enjoyable reading, and the safety tips Jane and Shelley learn are also helpful to the reader. But the plot is a little thin and much of the dialogue rings a false note. The book's most literary aspect is the wordplay of the title. (Mar.)