Set in 1990, O'Shaughnessy's intriguing 12th legal thriller to feature crusading lawyer Nina Reilly (after Case of Lies
) takes a look at Nina's early career. An attractive single mom, Nina lives with her preschool-age son, Bob, in Carmel-by-the-Sea, Calif., where she works as a paralegal while pursuing a law degree. She worries about her mother, Ginny, who's struggling with a circulatory disease and recovery from a botched acupuncture treatment. When Nina's ex-lover, criminal defense attorney Richard Filsen, resurfaces after four years, demanding a paternity test and shared custody of Bob, Nina seeks help from her current crush, Jack McIntyre, and his sexy girlfriend, Remy Sorensen, who's angling for a judgeship. Everything explodes when first Richard and then Ginny are murdered. The pseudonymous O'Shaughnessy (Pamela and Mary O'Shaughnessy) offers some surprising twists involving the ambitious Remy. Nina's first brush with a future love, detective Paul van Wagoner, adds spice. (Dec.)