Cast
Lloyd Bridges
Dr. Doug Standish
Brian Kelly
Dr. Craig Mosby
Shirley Eaton
Dr. Margaret E. 'Maggie' Hanford
David McCallum
Dr. Philip Volker
Keenan Wynn
Hank Stahl
Marshall Thompson
Dr. Orin Hillyard
Gary Merrill
Dr. August 'Gus' Boren
Ron Hayes
Brinkman
George Shibata
Prof. Uji Hamaru
Donald Linton
Vice President
Frank Logan
Captain of the Diligence
Don Wells
Sonar Man on the Dilligence
Celeste Yarnall
Secretary
Crew
Directing
Andrew Marton
Director
Editing
Warren Adams
Editor
Visual Effects
Jim Danforth
Visual Effects