Alfred Edward Woodley Mason (May 7, 1865 – November 22, 1948) was a distinguished English author whose work significantly shaped the evolution of the mystery genre. He is best remembered as the creator of Inspector Hanaud, a brilliant French detective who first appeared in the 1910 masterpiece 'At the Villa Rose.' Hanaud’s psychological insight and professional methodology served as a vital early template for Agatha Christie’s Hercule Poirot. By blending intricate plotting with rich character development, Mason introduced a new level of sophistication to detective fiction, making him a key figure in the transition toward the Golden Age.