Diplomat’s Folly is a 1951 thriller mystery novel by the British writer Henry Wade.

[1] Wade was a key writer during the Golden Age of Detective Fiction.

The plot follows a traditional Country House mystery formula following a murder.

While working at the British Embassy in Paris, a promising diplomat had a relationship with an attractive Frenchwoman.

His indiscreetness led to information about the upcoming visit of the King to Paris, potentially putting the monarch's life in danger.