The Great Secret

The Great Secret
Overview
A wealthy young athlete comes to the aid of a beautiful heiress, whose fortune is being threatened by two arch villains, The Great Master and Doctor Zulph.
Similar
Rustlers of Red Dog (1935)
Zorro's Fighting Legion (1939)
Queen of the Sea (1918)
Sea Raiders (1941)
The Oakdale Affair (1919)
The Valley of Vanishing Men (1942)
The Lost Jungle (1934)
The Great Air Robbery (1919)
King of the Texas Rangers (1941)
Bertha the Sewing Machine Girl (1926)
Flash Gordon (1936)
The Strings of Steel (1926)
Hidden Dangers (1920)
The Girl from God's Country (1921)
Jesse James Rides Again (1947)
The Dice Woman (1926)
Flirting with Death (1917)
The Hazards of Helen (1917)
Scouts to the Rescue (1939)
After the Fog (1929)