Sent to investigate a payroll robbery, Marshall Rocky meets his old friends Ken, Eddie, and Max. He has the serial numbers and when Pop puts on his medicine show they get one of the bills. This enables Ken to see through Sorrell's scheme that threw the blame on an innocent rancher and he sets out to prove it. Written by Maurice Van Auken
Unfortunately the movie Harmony Trail is not yet available on HBO Max.
| Directing | Robert Emmett Tansey | Director |
| Production | Walt Maddox | Producer |
| Editing | Fred Bain | Editor |
| Writing | Robert Emmett Tansey | Story |
| Camera | Edward A. Kull | Director of Photography |
| Directing | Arthur Hammond | Assistant Director |
| Sound | Glen Glenn | Sound |
| Production | Robert Emmett Tansey | Associate Producer |
| Production | Fred McElwain | Production Manager |
