Who Is Number One?

Who Is Number One?
Overview
A silent 15-part movie serial.
Similar
Arsène Lupin versus Sherlock Holmes (1910)
The Broken Coin (1915)
The Million Dollar Mystery (1914)
The Hurricane Express (1932)
The Trail of the Octopus (1919)
The Iron Claw (1941)
The Girl Detective (1915)
The House of Hate (1918)
The Fatal Warning (1929)
The Adventures of Daredevil Jack (1920)
Dick Tracy's G-Men (1939)
The Master Mystery (1918)
Chick Carter, Detective (1946)
The Mysterious Mr. M (1946)
The Chinatown Mystery (1928)
The Green Archer (1940)
The Mystery Squadron (1933)
Zudora (1914)
Blake of Scotland Yard (1937)
The Exploits of Elaine (1914)