"A factual reconstruction of the sabotage events which took place to prevent Hitler's Germany from getting the heavy water needed to make an atomic bomb during the Second World War."
Frédéric Joliot-Curie
as Self - Professor
Raoul Dautry
as Self - Rustningsminister
Henki Kolstad
as Sersjant Einar Skinnarland
Johannes Eckhoff
as Fenrik Knut Hauglund
Claus Wiese
as Fenrik Joachim Rønneberg
Øyvind Øyen
as Major Professor Leif Tronstad
Andreas Aabel
as Fenrik Kasper Idland
Odd Rohde
as Sersjant Birger Strømsheim
Rolf Sørlie
as Self - Ingeniør
Torstein Skinnarland
as Self - Damvokter
Lew Kowarski
as Self - Laboratoriesjef
H.H. Halban
Allier
as Self - Sprengstoff-offiser
Jens A. Poulsson
as Self - Fenrik
Arne Kjelstrup
as Self - Sersjant
Claus Helberg
Knut Haukelid
Hans Storhaug
Fredrik Kayser
Knut Lier-Hansen
as Self
David Knudsen
as Generaldirektør Axel Aubert
Thorleif Reiss
as Ingeniør Jomar Brun
Finn Bernhoft
as En vaktmann
Einar Vaage
as En maskinist
Halvor Haugen
as En gammel mann
Ola Hansen
as Sjåfør
Harald Schwenzen
as Generaloberst Nicolaus von Falkenhorst
Alf Nøkle
as En utsending
Stevelin Urdahl
as En militæringenør
Folkman Schaanning
as En teknisk rådgiver
Hartvig Kiran
as Kommentarer lest av
Hilding Bladh
Director of Photography
Marcel Weiss
Jean Dréville
Director
Titus Vibe-Müller