Question: The Speckled Band is a film adaptation of a story written by which physician-turned-writer?
Sentence (from "Red Devils (film)"): Red Devils (also known as "The Hunt for blue fox") is a revolutionary adventure story written by the secretary of the Provincial Committee of the Kostroma RCP (B), novelist and screenwriter Paul Blyahin (Pavel Blyakhin) in 1921 and published in 1923–1926.
Relevant evidence: No