Her grasp of the minutiae of peoples' habits and her descriptive powers of buildings, streets and even rainy nights makes any Margery Allingham book a good read. This is no exception with a stunning opening description of the events leading up to a murder off an alley on a rainy night in London. The story jumps on into the wonderful world of Detective Inspector Charlie Luke with a bee in his bonnet about unsolved murders, which he shares with Albert Campion, the unassuming "star" of most of Allingham's books. This line of enquiry cuts across the story of a girl up from the country to stay with a recently widowed relative, who happens to own a museum of the unusual and strange as part of her property. Given the young lady's young admirer and an unscrupulous but charming villain on whom the widow dotes: the three strands begin to intertwine and lead into horrific conclusion.