Frontier Investigator
- Annu: 1949
- Paese: United States of America
- Genre: Action, Western
- Studio: Republic Pictures
- Parolla chjave: brother, murder, mail
- Direttore: Fred C. Brannon
- Cast: Allan Lane, Black Jack, Eddy Waller, Roy Barcroft, Gail Davis, Robert Emmett Keane
