A statistical and critical literary analysis of Golden Age Detective Fiction. Collects together: - a statistical analysis of the solutions to Agatha Christie's short stories, identifying favoured solutions (without giving away any plots!), comparing and contrasting the Poirot and Miss Marple stories. - analysis of the "fogginess" of the various members of the Detection Club writing the collaborative novels published in the Golden Age. - analysis of trends in locked room mysteries, identifying the different types of solution, when they were popular and gender differences in the genre. - analysing Golden Age Detective Fiction as popular culture revealing facets of life and society between the two world wars