
When the cable breaks on their diving bell four people find themselves trapped in a hidden underwater world.

as Prof. Millard Wyman

as Craig Randall

as Dale Marshall

as Paul Whitmore

as Lauri Talbott

as Dr. J.R. Matheny

as Old Man in the Caverns

as Jim Wyman

as Wilson, Sonar Man

as The Captain

as Hank

as Reporter

as Jimmy, Reporter

as Narrator