Junior G-Men

Billy Barton

Gyp

Terry

Lug

Buck

Harry Trent

Midge

Jim Bradford

Col. Barton

Brand

Severn

Henchman Corey

Henchman Evans

Henchman Foster

Mary

Henchman Akin (uncredited)

Henchman Burke (uncredited)

Henchman Greeley (uncredited)

Sailor (uncredited)

Murph (uncredited)

Professor Farraday (uncredited)

Draftsman Lynch (uncredited)

Junior G-Man (uncredited)

Crawford's Secretary (uncredited)