A poor but brilliant inventor sets out to make his fortune by discovering buried treasure, with the aid of a special inverted periscope through which he can view the ocean floor.
Lillian Cook
Prologue
Chester Barnett
John Fulton
Barbara Tennant
Dorothy Morgan
Eric Mayne
Earl of Linwood
Fred Radcliffe
E. Hudson
Lindsay J. Hall
Captain Bob
Charles Hartley
Joe Lee
Edith Conway
Nancy
Nellie Slattery
Parker
Edward Butler
Murphy
Gustave Fischer
An officer of the 'Condor'
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