Chapter Four examines the emergence of detective fiction in relation to real-world crime and how the reporting and mapping of it within newspapers bears upon fictional representations. It offers a sceptical (critical cartographic) reading of the map as something not to be trusted in the search for truth. This issue is considered in relation to the work of Agatha Christie which contains multiple maps. A final section on maps and human geometry (relations between people and place) analyses the social and human dimensions of such maps in the work of Christie and Margery Allingham. (95)