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.
Dr. Luis Delgado
Dr. Alfred Vreeland
Official
Ledring
Barbara Brand
Bob Exeter
Jerry Hollis
Ehrlich
Bogan
First Technician
Sonar Man
Aide
First Reporter
Second Reporter
Jean Hollis
Norma
Jim Morgan
