Currently available on 2 streaming services.

Underground streaming: where to watch online?

Currently you are able to watch "Underground" streaming on Tubi TV for free with ads.

Cast

Jeffrey Lynn
Kurt Franken
Philip Dorn
Eric Franken
Kaaren Verne
Sylvia Helmuth
Ludwig Stössel
Gustav Muller
Arthur Tovey
Man at Railroad Station
Mona Maris
Ms. Gessner
Peter Whitney
Alex
Martin Kosleck
Heller
Erwin Kalser
Dr. Franken
Ilka Grüning
Frau Franken
Frank Reicher
Professor Baumer
Egon Brecher
Herr Director
Hans Schumm
Heller's Aide
Wolfgang Zilzer
Hoffman
Roland Varno
Ernst Demmler
Henry Brandon
Rolf
Lotte Palfi Andor
Greta Rolf
Lisa Golm
Ella
Louis V. Arco
Otto
Roland Drew
Gestapo
Louis Adlon
Karl
Lester Allen
Krantz
Rudolph Anders
Official
Edit Angold
Maxel's Cashier
Walter Bonn
Lieutenant
Glen Cavender
Man Giving Sylvia Baggage Claim Ticket
Hans Conried
Herman
Gretl Dupont
Sylvia's Landlady
Arno Frey
Guard
Frederick Giermann
Radioman
Eddie Graham
Man in Phone Booth
Ludwig Hardt
Tobacco Clerk
Ernst Hauessermann
Rudi
David Hoffman
Willi
Willy Kaufman
Tobacco Customer
Rolf Lindau
Radioman
Carl Ottmar
Official
Paul Panzer
Janitor
John Piffle
Maxel
Otto Reichow
Gestapo Agent
Henry Rowland
Paul
Lionel Royce
Concentration Camp Captain
Norbert Schiller
Blind News Vendor
Robert R. Stephenson
Gestapo Agent
Ernö Verebes
Maxel's Headwaiter
Henry Victor
Gestapo Agent
Frederick Vogeding
Announcer Reporting Demise of Illegal Broadcasts
Wilhelm von Brincken
Captain Bornsdorff
Hans von Morhart
Gestapo Agent
Crane Whitley
Gestapo Agent
Hans Wollenberger
News Vendor