Set in German-occupied Norway, resistance fighter Knut Straud enlists the reluctant physicist Rolf Pedersen in an effort to destroy the German heavy water production plant in rural Telemark.

Directed by: Anthony Mann
Written by: Ben Barzman & Ivan Moffat
Runtime: 131 minutes
Tagline: Unarmed and outnumbered, they stunned the world with their incredible victory.
Cast:
Kirk Douglas Kirk Douglas
Dr. Rolf Pedersen 
Richard Harris Richard Harris
Knut Straud 
Ulla Jacobsson Ulla Jacobsson
Anna Pedersen 
David Weston David Weston
Arne 
Anton Diffring Anton Diffring
Major Frick 
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Also known as:
  • Hjältarna från Telemarken
  • Telemarkin sankarit
  • Hrdinové z Telemarku
  • Kennwort „Schweres Wasser“
  • Bohaterowie Telemarku