The irrepressibly inquisitive Adela Bradley is on hand to solve complex cases of blackmail, murder, sacrifice and mistaken identity with characteristic style and grace. Paired with her reliable and devoted chauffeur, George, Mrs Bradley's finely honed skills of investigation seek out the truth behind the mysteries surrounding a death at the opera, crimes of passion at a circus, poisoning and family secrets. Her powers of psychological sleuthing are challenged to the full, but Mrs Bradley's supreme intuition is triumphant in the end.