Directed by
| Howard Bretherton | ||
Writing Credits
| Dorothy Yost | ... | (story The Untamed Heart by) |
| Edward Clark | ... | (scenario) |
Cast (in credits order)
| Rin Tin Tin | ... | The Grey Ghost (as Rin-Tin-Tin) | |
| Jason Robards Sr. | ... | Steve Harley (as Jason Robards) | |
| Dorothy Dwan | ... | Janet | |
| Tom Santschi | ... | Ben Harley | |
 |
Billy Kent Schaefer | ... | Crippled Boy |
| Rest of cast listed alphabetically: | |||
|
|
Jimmy Boudwin | ... | School Student (uncredited) |
Cinematography by
| Frank Kesson | ||
Second Unit Director or Assistant Director
| Ted Stevens | ... | assistant director |
Art Department
| Victor Vance | ... | art titles |
