21 May 1915
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.
The Airmail Mystery
A pilot and a gold mine owner go up against the evil Black Hawk, who has invented a plane that can take off and land without using a runway.
Top Billed Cast
James Flavin Bob Lee
Lucile Browne Mary Ross
Wheeler Oakman Judson Ward
Frank Hagney Moran
Sidney Bracey Driscoll
Nelson McDowell Silent Simms
Walter Brennan Holly
Al Wilson Jimmy Ross
Jack Holley Andy
Bruce Mitchell Capt. Grant
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