Lashner proves that John Grisham isn't the only lawyer/author who can win over a jury of readers with a melodramatic page-turner. This dark tale of sex, betrayal, and murder again centers on Victor Carl -- the smarmy attorney in Hostile Witness and Veritas -- who maliciously agrees to defend an acquaintance (and romantic rival) accused of murder in hopes of sabotaging the defense. What follows are the essential plot twists, belated epiphanies, and courtroom surprises of an engrossing whodunit. However, a few scenes are predictable and the dialogue occasionally seems strained. (One character awkwardly professes, ''I want you so badly my kidneys ache.'') Nevertheless, Flaw wins a favorable verdict for its not-so-open-and-shut case.