Perhaps the desire to repay your husband for betrayal in the same coin is not the wisest decision. But Terrance Gielgud, plunged into despair, simply couldn’t think of anything better. And then the first young man she liked on the boulevard ended up in her car. And then fictitious names, secret meetings, a bungalow on the ocean. And everything would have been just great if the affair had not given rise to a deep, strong feeling in both...