Robert Livingston
Stony Brooke
Ray Corrigan
Tucson Smith
Max Terhune
Lullaby Joslin
Mary Russell
Betty Marsh
Roger Williams
Rutledge
Fern Emmett
Henrietta McCoy
Drama
Western
The Riders of the Whistling Skull
When Professor Marsh disappears while searching for the lost city of Lukachukai, his daughter enlists the help of the Three Mesquiteers.
