The Secret of the Submarine

The Secret of the Submarine is a 1916 American adventure film serial directed by George L. Sargent. It was 15 chapters and all of them are considered to be lost.

Plot

The heroes must keep the titular submarine from falling into the hands of the Russians or Japanese.

Cast

Juanita Hansen as Cleo Burke. This was Juanita Hansen's serial debut.
Tom Chatterton as Lt. Jarvis Hope
Hylda Hollis as Olga Ivanoff
Lamar Johnstone as Gerald Morton
George Clancey as Hook Barnacle
William Tedmarsh as Tatsuma
Harry Edmondson as Sextus
George Webb as Mahlin
Hugh Bennett as Dr. Ralph Burke
Joseph Beaudry as Calvin Montgomery
Perry Banks
Leona Hutton
George Gebhardt

Production

Secret of the submarine was written in the lead up to the United States' involvement in World War I by war correspondent Richard Barry. The serial was released 15 days after the Lusitania was torpedoed by a German sub.