Trailer
Cast
John Turner
John
Alastair Hunter
Dr. C. A. Morris, the village doctor
Jack MacGowran
Dr. Sampson, the paleontologist
Henri Vidon
Tom Trevethan
Lloyd Lamble
Senior Admiral, at the Admiralty
Guy Standeven
Naval Officer in Situation Room (uncredited)
Maurice Kaufmann
Mini Submarine Officer
Patrick Jordan
Photo Lab Aide
Leonard Sachs
Dialogue Scientist at Conference (bit)
Max Faulkner
PLA Radio Operator (uncredited)
André Maranne
French Radio Officer (uncredited)
Derren Nesbitt
The Radar Operator, at the radar room (uncredited)
André Morell
Prof. James Bickford
Neil Hallett
Dr. Sampson's Helicopter Pilot (uncredited)
Gene Evans
Steve Karnes
Leigh Madison
Jean Trevethan