Joseph Smith Fletcher was an English journalist, writer, and fellow of the Royal Historical Society. He studied law before turning to journalism.
His literary career spanned approximately 200 books on a wide variety of subjects including fiction, non-fiction, histories, historical fiction, and mysteries. He was known as one of the leading writers of detective fiction in the Golden Age.
Some of these "golden age" stories are rather weak and predictable, but some are entertaining. They are quite varied , a couple have a series character from other books, and some are not really a mystery at all.