THE LONE WOLF'S TURNED SPY-SMASHER!
The oil finally ran out... and somewhere in the future, the chase has begun.
AIRPLANE SPY RING EXPOSED BY SECRET SERVICE! NOw you can see the amazing inside story of how Uncle Sam's secret guardians smash vicious international air spies! (original poster)
Romance races with mystery...as Arsene Lupin and an American G-Man match wits...to win a girl...and solve a double murder! (Print Ad- Poughkeepsie Eagle-News, ((Poughkeepsie NY)) 7 March 1938)
Amazing exploits in the sky!
Murder is easy to forget.
It's One Mean Machine!
The Battle of the Ages! The Undergraduates vs. The Over-Thirties!