Allied agents infiltrate the Nazi rocket complex at Peenemunde in order to obtain their secrets and sabotage the plant. The film alternates between German developments of the V-1 missile and V-2 rocket (with a German cast speaking their own language) and discovery by British Intelligence of the weapon.

Drama, War, Thriller

Sophia Loren, George Peppard, Trevor Howard, John Mills, Richard Johnson, Tom Courtenay