When Professor Marsh disappears while searching for the lost city of Lukachukai, his daughter enlists the help of the Three Mesquiteers.
You can now watch The Riders of the Whistling Skull online on the following streaming providers in the United States.
| Directing | Mack V. Wright | Director |
| Writing | William Colt MacDonald | Novel |
| Production | Nat Levine | Producer |
| Writing | Oliver Drake | Screenplay |
| Production | Sol C. Siegel | Associate Producer |
| Writing | John Rathmell | Screenplay |
| Writing | Bernard McConville | Screenstory |
| Writing | Oliver Drake | Screenstory |
| Camera | Jack A. Marta | Director of Photography |
| Editing | Murray Seldeen | Supervising Editor |
| Editing | Tony Martinelli | Editor |
| Sound | Tony Martinelli | Music Supervisor |
| Sound | Harry Jones | Sound |
