Kurt Franken
Eric Franken
Sylvia Helmuth (as Kaaren Verne)
Fräulein Gessner
Alex
Heller
Dr. Franken
Frau Franken (as Ilka Gruning)
PLrof. Baumer
Herr Director
Herr Müller (as Ludwig Stossel)
Heller's Aide
Hoffman
Ernst Demmler
Rolf
Greta Rolf (as Lotte Palfi)
Ella
Otto (as Louis Arco)
Gestapo Agent
Karl (uncredited)
Herr Krantz (uncredited)
Official (uncredited)
Maxel's Cashier (uncredited)
Lieutenant (uncredited)
Man Giving Sylvia Baggage Claim Ticket (uncredited)
Herman (uncredited)
Sylvia's Landlady (uncredited)
Guard (uncredited)
Radioman (uncredited)
Man in Phone Booth (uncredited)
Tobacco Clerk (uncredited)
Rudi (uncredited)
Willi (uncredited)
Tobacco Customer (uncredited)
Janitor (uncredited)
Herr Maxel - Cafe Proprietor (uncredited)
Gestapo Agent (uncredited)
Paul (uncredited)
Concentration Camp Captain (uncredited)
Blind News Vendor (uncredited)
Man at Railroad Station (uncredited)
Maxel's Headwaiter (uncredited)
Announcer Reporting Demise of Illegal Broadcasts (uncredited)
Capt. Bornsdorff (uncredited)
News Vendor (uncredited)