William Boyd Andy Clyde Brad King Soo Yong Barbara Britton
66 minutes
Hoppy is leading a scientific expedition and the Chinese who have a hidden settlement nearby are trying to stop them. Saulters and his outlaw gang are also in the area looking for a gold mine. When Saulters men attack, the gold mine is found. Hoppy agrees to file for the Chinese and heads after Saulters in the chase to the land office.
1 January 1941
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| William Boyd | ... | Hopalong Cassidy |
| Andy Clyde | ... | California Carlson |
| Brad King | ... | Johnny Nelson |
| Soo Yong | ... | May Soong |
| Barbara Britton | ... | Jennifer Kendall |
| Derwin Abrahams | ... | Director |