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 pragmatic private investigator in India is drawn into a case when a household servant disappears; the investigation unfolds through interviews, local social detail, and procedural clue-gathering.

A contemporary publishing editor wrestles with a missing final chapter and a real-life death tied to a recently published mystery novel.

A 15-year-old math-minded narrator who describes his world through exact observations decides to investigate the mystery of a neighbor's dead dog. The investigatory quest exposes family tensions and forces the narrator to navigate social rules and sources of fear while trying to hold to his own systems of logic.

A contemporary mystery shaped by a group of older neighbors who meet regularly and become involved in solving a local murder. The setup follows their informal investigations and interpersonal exchanges as they piece together clues and test suspects, with the crime driving social interaction and group dynamics.

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 country solicitor is drawn into defending a mother and daughter accused of abducting and assaulting a visiting young woman. The plot hinges on assembling testimony, scrutinizing inconsistent claims, and testing how community suspicion and newspaper pressure shape culpability.

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 young woman inherits a small private-investigations practice and confronts a suspicious death that forces her to take on a case that tests her competence and moral judgment. The plot focuses on unraveling motive and circumstance through interviews, legwork, and piecing together local relationships.

Set in Georgian England, Marian Hayes flees London after shooting her abusive husband and falls into an uneasy alliance with Rob Brooks, a cheerful highwayman and con man who has blackmailed her.

Three apparently separate family tragedies — a child's disappearance, a domestic killing, and an inexplicable murder — form the puzzle around a private investigator who reconstructs lives through interviews, documents, and visits.