A collection of short mystery cases presented as conversational puzzles in which an imperturbable armchair detective relates and disentangles crimes for a companion narrator. Each episode reconstructs a puzzling death, theft, or disappearance, emphasizing close observation, medical and legal detail, and the uncovering of motives hidden beneath polite society. The stories favor logical deduction, irony, and brisk plotting, often exposing hypocrisy and financial or domestic secrets while privileging the intellect over physical pursuit.