Daniel Robin has become mixed up with a band of criminals known as "the 13," and is shot when he refuses to do their bidding. His daughter Ruth, brought home from boarding school, reaches his bedside before he expires. He tells her that she will be given thirteen keys. Instructions will be provided with each key and, if she follows the instructions, she will eventually fully learn of her birthright. Many adventures then follow as Ruth attempts to solve the puzzle of each key and establish her true birthright.
Drums of Fu Manchu
1940
6.1/10
The Spider Returns
1941
8.7/10
Cody of the Pony Express
1950
6/10
Flash Gordon
1936
6.42/10
Zorro's Fighting Legion
1939
5.2/10
Scouts to the Rescue
1939
0/10
The Iron Claw
1941
6/10
Canadian Mounties vs. Atomic Invaders
1953
6/10
Dangers of the Canadian Mounted
1948
6/10
Government Agents vs Phantom Legion
1951
6/10
Radar Men from the Moon
1952
4.452/10
Radar Patrol vs. Spy King
1949
5/10
The Black Widow
1947
4.9/10
Perils of Nyoka
1942
0/10
The Timber Queen
1922
0/10
King of the Rocket Men
1949
5.2/10
The Hurricane Express
1932
5.2/10
The Perils of Pauline
1914
5.65/10
Mysterious Island
1951
5.333/10
Rustlers of Red Dog
1935
8/10
