A collaborative experiment in crime fiction, this novel features members of the Detection Club writing chapters in which they swap their famous detectives to solve a singular, complex murder. The narrative follows a structure where each author takes over the investigation, forcing the characters to operate outside their usual stylistic boundaries. As the detectives grapple with the constraints of their peers' established personalities, the plot shifts through various deductive methodologies. The framework serves as both a traditional whodunit and a meta-textual commentary on the conventions of the Golden Age of detective fiction.

This work is regarded as a significant curiosity for students of the Golden Age of detective fiction. The collaborative nature of the project highlights the distinct voices and methodologies of the era's most celebrated mystery writers. Readers often note the fascination of seeing iconic detectives handled by authors other than their creators, which provides a unique look at the flexibility of these characters. The inclusion of archival material adds substantial value for those interested in the history of the Detection Club and its influence on the genre.