Slip Mahoney
Leo Gorcey
Slip Mahoney

“They're SLY SPIES...In a Harum-Scarem Adventure!!”
Slip and Sach are working as cleaners in a high rise building. They enter an office to clean it when a messenger hears them use Slip's given name, Terrance Mahoney. The messenger has a letter for "Terrance Mahonoey, Esq." and mistakenly delivers it to Slip. The letter informs Slip that he has inherited a mansion in Long Island. The boys then make their way to the mansion and find that it is inhabited by diamond smugglers. The real owner of the house shows up and helps save the day and defeat the smugglers and gives the boys the house as a reward.
Slip Mahoney
Leo Gorcey
Slip Mahoney
Sach Jones
Huntz Hall
Sach Jones
Gabe Moreno
Gabriel Dell
Gabe Moreno
Count Boris Petrov
Martin Kosleck
Count Boris Petrov
Terrence Mahoney
Paul Harvey
Terrence Mahoney
Teresa Mahoney
Amelita Ward
Teresa Mahoney
Whitey
William Benedict
Whitey
Chuck
David Gorcey
Chuck
Sandra Hasso
Jacqueline Dalya
Sandra Hasso
Butch
Benny Bartlett
Butch
Digger
Eddie Gribbon
Digger
Karl
Hans Schumm
Karl
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