Mystery of 31 New Inn, The by R. Austin Freeman (1862 - 1943)

Jeffrey Blackmore suspiciously made two wills, both deceptively alike, but still, in a cunning way, completely different. John Thorndyke, equally cunning and smart, smells something fishy. With stylish cool and logic, he leads the story up to its marvelous and fully credible climax. (Summary by Neeru Iyer)