Earl Derr Biggers' "Seven Keys to Baldpate" is a captivating mystery novel that artfully combines wit, humor, and suspense within its tightly woven plot. Published in 1913, the story follows the protagonist, a writer named Bill Moffat, who seeks solitude in a desolate inn, only to find the location overrun by a motley crew of characters, each with their own secrets. The novel is framed in a classi...