The series, set in 1942, focus on the narratives of the upcoming Resistance in La Rochelle and the claustrophobic life aboard U-612.
Rick Okon as Kapitänleutnant Klaus Hoffmann ("Kaleun")
Robert Stadlober as Oberfähnrich (Ing.) Hinrich Laudrup ("Smut")
Leonard Scheicher as Oberfunkmaat Frank Strasser
Vicky Krieps as Simone Strasser
Rainer Bock as Fregattenkapitän Heinrich Glück
Tom Wlaschiha as Kriminalrat Hagen Forster
Clemens Schick as Korvettenkapitän Johannes von Reinhartz
August Wittgenstein as Oberleutnant zur See Karl Tennstedt (1WO)
Thierry Frémont as Inspector Pierre Duval
Vincent Kartheiser as Samuel Greenwood
Franz Dinda as Oberleutnant (Ing.) Robert Ehrenberg (LI)
Lizzy Caplan as Carla Monroe
Olivier Chantreau as Emile Charpentier
Philip Birnstiel as Leutnant zur See Benno Schiller (2WO)
Leon Lukas Blaschke as Mechanikergast Thorsten Hecker
Rafael Gareisen as Mechanikerobergefreiter Max von Haber
Pit Bukowski as Obermaschinenmaat Pips Lüders
Stefan Konarske as Korvettenkapitän Ulrich Wrangel ("Der Alte")
Fleur Geffrier as Margot Bostal
Leonard Kunz as Gunther Maas
James D'Arcy as Jack Sinclair
Joseph Konrad Bundschuh as Leutnant zur See Julius Fischer (2WO)
Joachim Foerster as Elektromaschinenmaat Ralf Grothe
Julius Feldmeier as Obersteuermann Eugen Strelitz
Paul Bartel as Anatole Desjesquier
Kevin McNally as Greenwood Senior
Martin Schnippa as Maschinenmaat Dieter Heizer
Marvin Linke as Funkgast Peter Kraushaar
Clara Ponsot as Nathalie Prudhomme
Ben Münchow as Lutz Ritzenhoff
Thomas Kretschmann as Friedrich Berger
Klaus Steinbacher as Obermechanikermaat Josef Wolf
Rochelle Neil as Cassandra Lloyd
Michael McElhatton as Deputy Inspector Thomas O'Leary
Pierre Kiwitt as Korvettenkapitän Robert Schulz ("King Kong")
Ulrich Matthes as Hoffmanns Father
Felix Prochaska as Steuermann
Leonard Hohm as Herbert Schwab
Sebastian Hülk as Jürgen Salz
Anton Spieker as Erwin Müller
Béla Gábor Lenz as Wilhelm Stein
Oskar Bökelmann as Rainer Kehmann
Vincent Zur Linden as Manfred Kuhn
Florian Kroop as Frieder Mez
Grégory Gatignol as Marc
Merlin Rose as Ferdinand Freund
Matthieu Barbet as David Goldblatt
Hubert Delattre as Claude Martin
Lou Lambrecht as Ruth Goldblatt
Campbell Caspary as Hubert Bruch
Lion Leuker as Emil Richter
Robin Barde as Luc Ruchaud
Jules Pacini as Elias Goldblatt
Ivo Kortlang as Karl Wulf
Vito Sack as Arno Meyer
Ole Niemann as Smut
Erick Deshors as Francois Bizhet
Finnegan Oldfield as Father Etienne
Joyce Bibring as Camille Beziau
Wolfgang Rauh as Matthias Loidl
Laure Sirieix as Beatrice
Julie Weber as Forster's Secretary
Tolu Ajayi as Jazz Band Player #1 - Piano
Sam Price as Jazz Band Player #2 - Bass
Adisa Allen as Jazz Band Player #3 - Drums
Grifton Forbes-Amos as Jazz Band Player #4 - Trumpet
Dom Lawson as Jazz Band Player #5 - Saxophone
Dimitrij Schaad as Gustav Eckermann
Max Schimmelpfennig as Wilhelm Müller
Matthias Britschgi as Officer
Olivier Claverie as Priest
Jonathan Cardonnel as Jean-Luc Beziau
Aurélien Chauveau as French Policeman
Ilja Roßbander as Neumann
Tonya Graves as Casssandra's Landlady
Juwana Jenkins as Casssandra's Landlady
Guilaine Londez as Sylvie Maille
Nicola Millbank as Candy
Hélène Seuzaret as Jacqueline Rossignol
Nastassja Girard as Celine Lapointe
Jérémie Covillault as Dr. Morton
André Penvern as Georges
Alexander Finkenwirth as Hummel
Jakub Gierszal as Schmidt
Jessica Boone as Dorothy
Camille de Leu as Josef's Prostitute
Michael Pitthan as American Nazi #1
Jakub Drenk as Gluck's Adjutant
Simon Connolly as News Vendor
Andonis Anthony as Mr. Rosenmeyer
Alexandre Demademoiselle as Yves
Billy Rayner as Jail US
Eva Larvoire as Working Woman Train Depot
Julia Sabolová as Working Woman Train Depot
Stipe Erceg as Martin Chaffrof
Attila Borlan as Old Mate
Eric Bouwer as New Adjutant
Pavel Bousek as German Guard
Mark Zak as Refugee
Nora Schulte as Kasak Woman
Johannes Heinrichs as Policeman
Roy McCrerey as Captain McAllister
Christian Sinniger as Anglade
Matti Schmidt-Schaller as Joachim Blaschke
Mathieu Barbet as David Goldblatt
Tobias Schenke as Heuser
Fredrik Jan Hofmann as Kurt Burgmair
Niels-Bruno Schmidt as Senior Kriegsmarine Officer
Björn Ingmar Böske as Oskar Lang
Vincent Redetzki as Junior Kriegsmarine Officer
Urbain Cancelier as Father Michel
Michel Bompoil as Mayor Brunel
Florian Brückner as Klaus Brehm
Jiri Vales as Gestapo Officer
Nico Ehrenteit as German Soldier 1
Eugen Bauder as Lothar Winterberg
David Bowles as Doctor
Florian Wünsche as German Soldier 2
Thomas Zielinski as Senior Man
Pierre Peyrichout as Concierge (French)
Oleg Tikhomirov as Schulze
Felix Kreutzer as Opponent
Alex Figueiredo as Navigator
Philipp Schenker as Military Policeman
Fiz Marcus as Old Jewish Lady Rosa Joselowicz
Joe Weintraub as LI
James McVan as US Sailor 1
Jirí Bohm as Hydrophone Officer
Stanislav Callas as Helmsman U-612
Jim High as US Sailor 2
Karolína Krézlová as Thorsten's Prostitute
Daniel Gawlowski as Radio Room Man 1
Lukas Zumbrock as Radio Room Man 2
Markus von Lingen as Prosecutor
Martin David as Firing Squad
Roman Horák as Officer on Train
Rex Chidera Ixpah as Kid Jazz Club
Stéphane Poignant as Bartender
Dar Dash as Joe Minton
Damian Odess-Gillett as Ny Police Officer #1 - Jazz Club
Jake Zahradnik as American Nazi #2
Clemons Gordon as American Nazi #3
Jeffrey Smith as Ny Police Officer #2 - Jazz Club
Andrew Goddard as Officer Downey
Christopher Hollis as Officer Rickets
Lenka Regulyová as Crew
Iva Sindelková as German Nurse
Petra Buckova as Forster's Secretary
Greg Canestrari as US Policeman Long Island
Cyril Dobrý as Gestapo Officer
Jacob Erftemeijer as Firing Squad Leader
Vincent Frost as Shipwrecked Passenger
Hristijan Kostovski as Wounded Passanger
Valerie Kubrová as Tilly
Robert Orr as Photographer Train Depot
Fanette Ronjat as Tilly's Mother
Daniel Zappi as Tilly's Father
Marco D'Almeida
Jo Hartley
Florian Panzner
Joana Ribeiro
Ray Stevenson
