The Claverton Mystery is a 1933 detective novel by John Rhode, the pen name of the British writer Cecil Street.

[1] It is the fifteenth in his long-running series of novels featuring Lancelot Priestley, a Golden Age armchair detective.

It was published in the United States by Dodd Mead with the altered title The Claverton Affair.

[3] Priestley goes to visit his friend Sir John Claverton at his gloomy house, and shortly afterwards hears that he has died.

The dead man's doctor is not convinced it was a natural death, and evidence of poisoning emerges.