For better books by Malcom, read "The Silent Woman: Ted Hughes and Sylvia Plath" or "Psychoanalysis: The Impossible Profession." For better books about court cases which do manage, in the writer's hands, to say something about the human condition, Calvin Trillin's "Killings" is highly recommended.
It is as engaging as, if not more than, other books by Malcolm. It reads like a profile of a defese lawyer who is idealistic to the degree of being obstinate. But at a deeper level, the book argues that the American legal system, which many automatically associate with such ideals as Justice, Fairness and Objectiveness, is more often a battle ground for competing narratives from the defense and prosecution. Malcolm seems to suggest that the winning of a case has less to do with facts than with weaving of those facts into convincing narratives. Being naively idealistic, Sheila McGough was so unsuccessful at being a likable human being (even Malcolm has difficulty liking her) that she tainted the credibility of her own case in the eye of the judge who just didn't find her commonsensical.
But was she guilty because she was a difficult human being/lawyer? This is the troubling question posed by the book. Depending from which angle one approaches the book, it's either a cautionary tale about the importance of being commonsensical or a successful attempt at deconstructing what we call seeking of truth as the goal of American justice system.