Credits
Cast
Gene Evans
Steve Karnes
André Morell
Prof. James Bickford
Leigh Madison
Jean Trevethan
John Turner
John
Alastair Hunter
Dr. C. A. Morris, the village doctor
Lloyd Lamble
Senior Admiral, at the Admiralty
Jack MacGowran
Dr. Sampson, the paleontologist
Maurice Kaufmann
Mini Submarine Officer
Henri Vidon
Tom Trevethan
Patrick Jordan
Photo Lab Aide
Howard Lang
Naval Commader, at the "Valkyrie" wreck (uncredited)
Leonard Sachs
Dialogue Scientist at Conference (bit)
Ernest Blyth
Scientist at Conference (uncredited)
Neal Arden
TV Newscaster (uncredited)
Paul Beradi
Man Listening to Car Radio (uncredited)
Max Faulkner
PLA Radio Operator (uncredited)
Neil Hallett
Dr. Sampson's Helicopter Pilot (uncredited)
André Maranne
French Radio Officer (uncredited)
Derren Nesbitt
The Radar Operator, at the radar room (uncredited)
Guy Standeven
Naval Officer in Situation Room (uncredited)
Art
Harry White
Art Direction
Camera
Desmond Davis
Camera Operator
Ken Hodges
Director of Photography
Costume & Make-Up
Bernadette Ibbetson
Hairstylist
Jimmy Evans
Makeup Artist
Freda Gibson
Wardrobe Master
Crew
Irving Block
Special Effects
Jack Rabin
Special Effects
Louis DeWitt
Special Effects
Pete Peterson
Special Effects
Willis H. O'Brien
Special Effects, Visual Effects
Directing
Jennifer Herrinshaw
Continuity
Douglas Hickox
Director
Kim Mills
First Assistant Director
Editing
Lee Doig
Editor
Production
David Diamond
Producer
Ted Lloyd
Producer
Jacques de Lane Lea
Production Manager
Sound
Edwin Astley
Original Music Composer, Conductor
Sid Wiles
Sound
Richard Marden
Sound Editor
Writing
Daniel James
Screenplay
Eugène Lourié
Screenplay, Director, Production Design
Alan J. Adler
Story
Robert Abel
Story