Bud Alexander
Lou Francis
Helen Gray
Tommy Nelson
Boots Marsden
Boots Morgan
Det. Roberts
Dr. Philip Gray
Radio Announcer
Rocky Hanlon
Professor Dugan (uncredited)
Sneaky (uncredited)
Officer (uncredited)
Bald Man (uncredited)
Fight Spectator (uncredited)
Trainer (uncredited)
Ring Announcer (uncredited)
Man at Bar (uncredited)
Reporter (uncredited)
Dugan Detective School Graduate (uncredited)
Counter Man (uncredited)
Newspaperman (uncredited)
