"A five man submarine plants sensors around the worlds oceans to monitor for a impending earthquake."
Lloyd Bridges
as Dr. Doug Standish
Brian Kelly
as Dr. Craig Mosby
Shirley Eaton
as Dr. Margaret E. 'Maggie' Hanford
David McCallum
as Dr. Philip Volker
Keenan Wynn
as Hank Stahl
Marshall Thompson
as Dr. Orin Hillyard
Gary Merrill
as Dr. August 'Gus' Boren
Ron Hayes
as Brinkman
George Shibata
as Prof. Uji Hamaru
Donald Linton
as Vice President
Frank Logan
as Captain of the Diligence
Don Wells
as Sonar Man on the Dilligence
Celeste Yarnall
as Secretary
Andrew Marton
Director
Arthur Weiss
Writer
Producer
Ivan Tors
Harry Sukman
Original Music Composer
Clifford H. Poland Jr.
Director of Photography
Warren Adams
Editor
Mel Bledsoe
Art Direction
Preston Rountree
Max Pittman
Set Decoration
Jim Danforth
Visual Effects
Art Arthur
Ben Chapman
Associate Producer
