No defense [a novel]

Summary: Barbara Holloway is a trial lawyer who tends to take on difficult cases. One involved a woman accused of killing her own child, another involved a mentally disabled man, and her last one found her entangled in such a mess that it's a wonder she lived through it at all. But in every previous case she has had some fragment with which she could build an argument. This time out, it seems there's no defense at all. Lara and Vinny Jessup had a lovely May-December marriage. It renewed his lease on life after a battle with cancer, and it rescued her from a bad first marriage. Initially, the sheriff out in Loomis County thinks that Vinny died when his car rolled over on a bad curve on Lookout Mountain. Then he finds the gunshot wound. Was it suicide or was it murder? With a large insurance policy as her motive, Lara could have staged the death-or so it appears to the sheriff.