Ralph Bellamy

Barry Eldon

Tala Birell

Renee Dupont

Victor Kilian

Tiny Davis

Douglass Dumbrille

Victor Arnold

Robert Middlemass

Drewen

Edward Van Sloan

Schutter

Niles Welch

"Marconi"

Robert Allen

Bill Lewis

Billie Seward

Mona Greenwood

Marianne Edwards

Dorothy Dunlap

Geneva Mitchell

Gertie Dunlap

Wyrley Birch

Holden

Pat Flaherty

Frank Dunlap

Wiley Post

Himself

Charles C. Wilson

Newspaper editor

Inez Courtney

Second Nurse (uncredited)

Robert Stanley

Pete's Pal (uncredited)

Ethel Bryant

Egon Brecher

Schulter's Henchman

Al Hill

Arnold's Chief Henchman