Elenco - Northern Frontier
Kermit Maynard
Mountie Sergeant Mack MacKenzie
Eleanor Hunt
Beth Braden
Russell Hopton
Duke Milford
J. Farrell MacDonald
Inspector
LeRoy Mason
Stone
Gertrude Astor
Mae
Ben Hendricks Jr.
Sam Keene
Walter Brennan
Stuttering Cook
Lloyd Ingraham
Prof. Braden
Nelson McDowell
Tope
Lafe McKee
Old Trapper
Chris Willow Bird
Indian Henchman (uncredited)Jack Chisholm
Henchman Durkin (uncredited)
Kernan Cripps
Mike - the Bartender (uncredited)
Dick Curtis
Henchman Pete (uncredited)
Henry Hall
Old Trapper #2 (uncredited)
Charles King
Mountie Wallace (uncredited)
Artie Ortego
Henchman Gareau (uncredited)
Tyrone Power
Mountie (uncredited)Rocky
Mack's Horse (uncredited)