The Secret of the Submarine

An American adventure film serial comprised of fifteen episodes of two reels (24 min) each. All chapters are presumed lost. An American adventure film serial comprised of fifteen episodes of two reels (24 min) each. All chapters are presumed lost. An American adventure film serial comprised of fifteen episodes of two reels (24 min) each. All chapters are presumed lost. An American adventure film serial comprised of fifteen episodes of two reels (24 min) each. All chapters are presumed lost.