I am still surprised that nobody here seems to have read or heard of my favorite childhood mystery writer, Edgar Wallace. He was so prolific that when he told a caller, "I'm working on a novel," the caller replied, "Go ahead, I'll wait,"
Probably not a true story, but he did churn out text, mysteries only being a part of it, as well as the original "King Kong" script. As a kid, I was intrigued by his settings, which tended to include dark docks in London's Limehouse district, complete with up-to-no-good Chinese crooks.