Cast
Kurt Franken
Eric Franken
Sylvia Helmuth
Fräulein Gessner - Heller's secretary
Alex Schumann, Underground Member
Col. Heller
Dr. Albert FrankenFrau Franken 
Prof. Hugo Baumer
Herr Director of the Chemical Institute
Herr Gustav Müller, a NeighborHeller's Aide 
Walter Hoffman
Ernst Demmler, Underground Member
Josef Rolf, Underground Member Shot by Gestapo
Greta Rolf, undergrounderElla aka Elsa, Franken's Housekeeper 
Otto
Gestapo Officer with Pencil Mustache
Karl, Baggage Attendant, not listed in credits
Herr Krantz, not listed in credits
Official, not listed in creditsMaxel's Cashier, not listed in creditsа Lieutenant, not listed in credits 
Man Giving Sylvia Baggage Claim Ticket, not listed in credits
Herman, Underground Member, not listed in creditsSylvia's Landlady, not listed in creditsа Guard, not listed in credits
Radioman, not listed in creditsMan in Phone Booth, not listed in credits Tobacco Clerk, not listed in credits Rudi, not listed in credits Willi, Underground Member, not listed in credits Tobacco Customer, not listed in credits 
Radioman, not listed in creditsOfficial, not listed in credits 
Janitor, not listed in creditsHerr Maxel, Cafe Proprietor, not listed in credits Gestapo Agent, not listed in credits 
Paul, Underground Member on Motorcycle, not listed in credits
Concentration Camp Captain, not listed in creditsBlind News Vendor, not listed in credits Gestapo Agent, not listed in credits Man at Railroad Station, not listed in credits Maxel's Headwaiter, not listed in credits 
Gestapo Agent, not listed in creditsAnnouncer Reporting Demise of Illegal Broadcasts, not listed in credits Capt. Bornsdorff, not listed in credits Gestapo Agent, not listed in credits Gestapo Agent, not listed in credits News Vendor, not listed in credits 
