Synopsis
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.
Cast

Sophia Loren
Nora Van Ostamgen

George Peppard
Lt. John Curtis

Trevor Howard
Professor Lindemann

John Mills
General Boyd

Richard Johnson
Duncan Sandys

Tom Courtenay
Robert Henshaw

Jeremy Kemp
Captain Phil Bradley

Anthony Quayle
Bamford

Lilli Palmer
Frieda

Paul Henreid
General Ziemann

Helmut Dantine
General Linz

Barbara Rütting
Hannah Reitsch

Richard Todd
Wing Cmdr. Kendall

Sylvia Syms
Constance Babington Smith

John Fraser
Flight Lt. Kenny

Maurice Denham
RAF Officer

Patrick Wymark
Prime Minister Winston Churchill
Wolf Frees
German Police Inspector

Moray Watson
Col. Kenneth Post

Richard Wattis
Sir Charles Sims

Allan Cuthbertson
German Technical Examiner

Karl Stepanek
Prof. Hoffer

William Mervyn
Dutch Technical Examiner

Milo Sperber
German Hotel Porter
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