A San Francisco private detective becomes tangled in a case that hinges on a coveted object and a series of killings. The narrative presents events from an external third-person viewpoint—reporting only actions, dialogue, and appearances—so the mystery and shifting loyalties carry the dramatic weight.

A baffling murder in 1920s London brings together an informal club of six armchair detectives who each propose different solutions to the same facts. The novel turns the detective parlor game into its subject, testing how many plausible—but ultimately flawed—explanations can arise from identical evidence.

A woman linked to an academic community returns to a college where puzzling acts and a climate of fear have erupted; an investigator connected to her seeks to discover who is behind the incidents and why.

A celebrated detective traveling home is detained when a murder is found on the Orient Express after heavy snowfall. Stranded passengers become a finite pool of suspects and the detective must sort through conflicting alibis, motives, and testimony to reconstruct what happened before the train resumes its journey.

A murder occurs within a limited social circle and the central account is delivered in first person by a figure close to the investigation; a famous private detective appears and works from clues and interviews to identify the killer.

A woman embedded in high society navigates the pressures of reputation, money, and marriage as private desires and public judgment intersect. The immediate pressure is how social expectations and limited economic choices shape personal decisions and lead to moral and material consequences.

Set in late-19th-century London, the novel follows an agent involved in espionage for an unnamed foreign power amid a small circle touched by anarchist agitation. The book traces the effects of political plotting and covert operations on ordinary lives, especially relationships marked by dependency and vulnerability.