An engineer is hired to plan and oversee the construction of a undersea tunnel between Europe and the US. However, certain interests don't want to see the tunnel built and use every means at their disposal, including sabotage and murder, to stop its construction. French-language version of the 1933 German DER TUNNEL, q.v.
Jean Gabin
Madeleine Renaud
Pierre Nay
Gustaf Gründgens
André Nox
Edmond van Daële
André Bertic
Philippe Richard
Raymonde Allain
Robert Le Vigan
Victor Vina
Alexandre Arnoux
William Burke
Henri Trévoux
Henri Valbel