Edmond O'Brien
J. Quincy 'Penji' Pennant
Murray Alper
Joe the Cab Driver (uncredited)
Walter Baldwin
Jerry the Nitrate Technician (uncredited)
Stanley Blystone
Security Guard Shooting Gun (uncredited)
Frank McLure
Sarcastic Test Observer (uncredited)
Frank Mills
Beer Drinker at Bar (uncredited)
Netta Packer
Mr. Tuttle's Secretary (uncredited)
Jack Perry
Henchman at Dice Table (uncredited)
Charles Schaeffer
Charlie the Bartender (uncredited)
Carl Sklover
Man at Dice Table (uncredited)
Tom Steele
Truck Driver / Henchman (uncredited)
Sally Wadsworth
Miss Wood, Dr. Wayne's Receptionist (uncredited)
