The professional.
(Adult Book)

Elizabeth Shaw specializes in wills and trusts at the Boston law firm of Shaw and Cartwright, and over the years she's developed a friendship with wives of very wealthy men. These rich wives have a mutual secret: they've all had an affair with a man named Gary Eisenhower--and now he's blackmailing them . Shaw hires Spenser to make Eisenhower "cease and desist," but when women start turning up dead, Spenser's assignment goes from blackmail to murder.