An Intriguing Murder — Roderic Jeffries

For once, Alvarez is eager to get to work
Scott Muir was envied, but seldom liked; when Keir Locke learned he might have been the man whose malign influence had led his daughter to commit suicide, dislike turned to hatred. On Saturday, Muir entertained Tabitha who would have tempted a misogynist to recant. So when he was found dead in his swimming pool, she becomes an important witness and it is Alvarez's duty to question her.