Having read three of Margaret Yorke's murder mysteries, I can say she is an excellent crime fiction novelist! She starts with an average day in the life of a person, then shows the incident or beginnings of the discontent that will drive the murder. What makes her novels so enjoyable is the characterization of all involved, the murderer as well as the murdered. In this tale, poor Ronald Trimm is sexually frustrated because his very competent wife is competent in every aspect except sex. She hates it and only did just enough to get him to marry her, then worked it out of their relationship. He dreams of it, has constant erotic fantasies, and has the unfortunate experience of driving home a neighbor, a rich, lonely widow one night who seduces him. Once he crosses that line, he realizes all that he is missing, and his life is never the same again. In Yorke's stories, main characters get killed off as well as minor ones and every scene is compelling. Her writing is crisp, her books are short, usually just over 200 pages, and her stories are suspenseful. I would recommend!