03/03/1959
Gene Evans
as Steve Karnes
André Morell
as Prof. James Bickford
Leigh Madison
as Jean Trevethan
John Turner
as John
Alastair Hunter
as Dr. C. A. Morris, the village doctor
Lloyd Lamble
as Senior Admiral, at the Admiralty
Jack MacGowran
as Dr. Sampson, the paleontologist
Maurice Kaufmann
as Mini Submarine Officer
Henri Vidon
as Tom Trevethan
Patrick Jordan
as Photo Lab Aide
Howard Lang
as Naval Commader, at the "Valkyrie" wreck (uncredited)
Leonard Sachs
as Dialogue Scientist at Conference (bit)
Ernest Blyth
as Scientist at Conference (uncredited)
Neal Arden
as TV Newscaster (uncredited)
Paul Beradi
as Man Listening to Car Radio (uncredited)
Max Faulkner
as PLA Radio Operator (uncredited)
Neil Hallett
as Dr. Sampson's Helicopter Pilot (uncredited)
André Maranne
as French Radio Officer (uncredited)
Derren Nesbitt
as The Radar Operator, at the radar room (uncredited)
Guy Standeven
as Naval Officer in Situation Room (uncredited)
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