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