Ships disappear on route across the Arctic Sea, and a special submarine is sent to investigate.
Richard "Reef" Holloway
Dan Wendover
Carl Neilson Jr.
Ian Hunt
David Milburn
"Grif" Griffin
Clifford Kent
Julie
Admiral Terhune
Justin Murdock
Helen Milburn
Frogman Carney
Frogman Powell
Chester Tuttle
Watkins
Narrator
Saucer Voice (voice)
Passerby (uncredited)
Passerby (uncredited)
