If I'd Killed Him When I Met Him

When forensic anthropologist Elizabeth MacPherson becomes the official P.I. for her brother Bill's fledgling Virginia law firm, she quickly takes on two complex cases, Eleanor Royden, a perfect lawyer's wife for twenty years, hs shot her ex-husband and his beautiful late-model wife in cold blood. And Donna Jean Morgan is implicated in the death of her Bible-thumping bigamist husband.

Bill's feminist firebrand partner, A.P. Hill, does her damnedest for Eleanor, an abused wife in denial, and Bill gallantly defends Donna Jean. 
Meanwhile, Elizabeth's forensic expertise, including her special knowledge of poisons, leads her into the most challenging case of her career...
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Elizabeth's life is unsettled; her husband is missing on a boat trip; she's between jobs; her parents are divorced and her mother is "living with" a woman (English professor). Her Lawyer brother has unusual cases : a woman shoots a greedy ex-husband and young wife; and a "preacher" takes a second young wife, he ends up dead and first wife accused. There is the old story of a young bride, after the Civil War, and her husband's death from poison -- a relative of the present day preacher's wife.. Elizabeth discovers how he died. Also, a very odd case of a woman wanting to marry a dolphin.... it doesn't work out!