Maisie Dobbs, the brave, insightful and compassionate heroine of Jacqueline Winspear's mystery series, has a lock on the hearts of readers as well as the men who would be her suitors. Winspear's new novel about a kind "psychologist and investigator" in '30s Britain spends as much energy on Dobbs and her circle of friends as it does on the mystery she solves, but doesn't suffer for doing so.