Sach is the exact double of a famous French scientist who has invented a powerful rocket fuel. Enemy agents, mistaking Sach for the scientist, attempt to kidnap him and get the formula for the fuel.
Leo Gorcey
as Slip Mahoney
Huntz Hall
as Sach Jones / Maurice Gaston Le Beau
Bernard Gorcey
as Louie Dumbrowsky
Veola Vonn
as Mimi Du Bois
Steven Geray
as Dr. Gaspard
John Wengraf
as Vidal
Charles La Torre
as French Diplomat
Roy Gordon
as Senior UN Official
Robin Hughes
as British Agent at UN Meeting
David Gorcey
as Chuck
Benny Bartlett
as Butch
Mari Lynn
as Celeste Gambon
