The Secret Kingdom is a 1917 silent action movie serial.
Charles Richman
Prince Philip / Phil Barr
Dorothy Kelly
Madame Savatz
Joseph Kilgour
The Prime Minister
Arline Pretty
Princess Julia
William R. Dunn
Juan
De Jalma West
Count Ramon
Charles Brabin
Director
Theodore Marston
Basil Dickey
Scenario Writer
Louis Joseph Vance
Story