Ralph Bellamy
Barry Eldon
Edward Van Sloan
Schutter
Tala Birell
Renee Dupont
Victor Kilian
Tiny Davis
Charles C. Wilson
Newspaper editor
Robert Middlemass
Drewen
Inez Courtney
Second Nurse (uncredited)
Douglass Dumbrille
Victor Arnold
Egon Brecher
Schulter's Henchman
Robert Allen
Bill Lewis
Billie Seward
Mona Greenwood
Pat Flaherty
Frank Dunlap
Geneva Mitchell
Gertie Dunlap
Al Hill
Arnold's Chief Henchman
Wyrley Birch
Holden
Niles Welch
"Marconi"
Marianne Edwards
Dorothy Dunlap