The Sharkskin Book (Way Out #2), by Harry Stephen Keeler (epub/Kindle/pdf)
They’ve got Ogden Farlow dead to rights! Under the third degree he admitted that the body, with a bullet from his gun in its skull, is lying buried in his basement. It’s the most open-and-shut case the DA has ever seen! So begins the most incredible mystery ever written by Harry Stephen Keeler.
Note: As with most of Keeler's work, this book is not politically correct by current standards.