Cast & Crew
Carl Benton Reid
Marine engineer Bob Gage is hired to supervise the construction of an underwater city being built by Dr. Halstead of the Institute of Oceanography. Gage would prefer to devote his energies to the conquest of outer space and is at first skeptical that the project might eventually provide a haven in the event of an atomic war. Nevertheless, he gradually becomes more enthusiastic over the underwater effort, largely because of his growing love for Dr. Halstead's niece, Dr. Monica Powers. When frogmen have completed assembling the prefabricated parts and cells of the city, Gage, Monica, and several others prepare for the arrival of an inspection team from Washington. Gage then learns that the city has been built at the edge of a subterranean chasm that is slowly being washed away, and he orders an immediate evacuation. Although Dr. Halstead and several others lose their lives when the city collapses, Gage discovers that one of the city's cells has survived the disaster. Now convinced that a new underwater city can be satisfactorily built, he makes plans with Monica to begin another project.
Carl Benton Reid
George De Normand
Howard A. Anderson Co.
Charles J. Rice
Although the film was shot in color, producer Alex Gordon stopped in a theater where it was showing and was astounded to see that it was being shown in black and white. He checked with Columbia Pictures, the distributor, and was informed that all release prints of the film were in black and white. Gordon could not get anyone at Columbia to explain to him why the film was released that way. Later, when the film was syndicated to television, the prints that were sent out were in color. Gordon couldn't get Columbia to explain that, either.
Filmed in Eastman Color by Pathé.