At the Villa Rose is a 1910 detective novel by the British writer AEW Mason, the first to feature his character Inspector Hanaud. The story became Mason's most successful novel of his lifetime. It was adapted by him as a stage play in 1920, and was used as the basis for four film adaptions between 1920 and 1940. Alfred Edward Woodley Mason was an English author and politician. He is best remembered for his 1902 novel of courage and cowardice in wartime, The Four Feathers and is also known as the creator of Inspector Hanaud, a French detective who was an early template for Agatha Christie's famous Hercule Poirot.