Ivan Tors (Story) · Leslie Stevens (Writer) · Alan Caillou (Story) · Don McDougall (Director) · Winston Miller (Writer)
Ricardo Montalban
Dr. Luis Delgado
José Ferrer
Dr. Alfred Vreeland
Leslie Nielsen
Official
Chris Robinson
Ledring
Katherine Woodville
Barbara Brand
Lawrence P. Casey
Bob Exeter
Tom Simcox
Jerry Hollis
Curt Lowens
Ehrlich
Austin Stoker
Bogan
Phil Philbin
First Technician
Dan Chandler
Sonar Man
Ted Swanson
Aide
Myron Natwick
First Reporter
Harlan Warde
Second Reporter
Elisa Ingram
Jean Hollis
Joan Murphy
Norma
William Evenson
Jim Morgan
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A scientist and his team of underwater explorers search for the culprit who has stolen the world's supply of nerve gas and hidden it somewhere in the ocean.
