Can Sherlock Holmes resist the ultimate challenge?
Who better to solve England's most puzzling mystery than these two international crime busters?
When they reach out for each other... they touch every heart... with warmth, charm and laughter!
Mysterious Scenes of Practices That Will Be Used by Master Crooks of the Future! Radio Tapping! International Plots! The Whole World a Hunting Ground! (Print Ad- Buffalo Courier-Express,((Buffalo, NY)) 13 October 1929)