An evil gang is involved in both cattle rustling and the robbing of stagecoaches. Hoppy must stop them without help from the sheriff who turns out be a major outlaw himself.
You can now watch Three on the Trail online on the following streaming providers in the United States.
| Directing | Howard Bretherton | Director |
| Writing | Vernon Smith | Screenplay |
| Crew | Cliff Parkinson | Stunts |
| Directing | Ray Flynn | Assistant Director |
| Crew | Cliff Lyons | Stunts |
| Sound | Charles Sargent | Original Music Composer |
| Editing | Edward Schroeder | Editor |
| Writing | Clarence E. Mulford | Story |
| Writing | Doris Schroeder | Screenplay |
| Production | Harry Sherman | Producer |
| Production | George Green | Associate Producer |
| Crew | Jack Montgomery | Stunts |
| Crew | Art Dillard | Stunts |
| Camera | Archie Stout | Director of Photography |
