In 1840, Sam Lash heads west for adventure. He meets up with some Mountain Men, and they head for the Rockies to trap beavers and cats. In Taos he meets Lola, a beautiful Mexican girl from a proud and rich family. They fall in love and he persuades her to elope with him. After they get married, Sam is torn between his love for Lola and his yearn for traveling.

Yukon Territory, Canada, November 1931. Albert Johnson, a trapper who lives alone in the mountains, buys a dog almost dead after a brutal dogfight, a good deed that will put him in trouble.

Assigned to catch a gang of outlaws, officers Bruce Kenton and Paddy Halloran rescue Helen Morgan when her wagon is attacked by the very same gang. Through a ruse, Kenton manages to infiltrate the gang, which is holed up in the lawless community of Caribou Flats. While in the employ of villainous trading post operator Jack Blake, Kenton discovers that Blake is not only the leader of the gang but also the man who murdered Helen's brother.

Constable Ward is assigned to track down a mysterious villain known only as The Leader. Trying to locate a secret gold mine, The Leader pits the Indians against the Mounties, whom he blames for creating trouble.

In this north-western set in the Yukon, a Mountie must investigate the violent deaths of three mail carriers.

The hunter becomes the hunted, an officer of the Royal Mounted, fleeing, fighting for his life. Guided to a secret valley in the frozen North by a hot-blooded French-Canadian beauty, with a secret of her own...

King of the Candian riding police is up against Japs and Nazis who are about to invade Canada. They just want to clear the way with a new futuristic plane called "The Falcon" first, but that's not gonna happen if Kig has his way.

Molly Killbride, daughter of the inspector in the Royal Mounties, is in love with trooper Jimmy Hearn, but her father prefers that she marry Harry Morgan, a wealthy young civilian. Morgan, however, is allied with a gang of outlaws headed by Hanley, and when Morgan taunts Jimmy into a fistfight the gang causes him to be railroaded to prison for felonious assault.

Western star Charles Starrett makes one of his periodic forays into the Great White North in Columbia's Royal Mounted Patrol. When villainous lumberman Frenchy Duvalle refuses to limit his wood-chopping activities, he inadvertently touches off a forest fire. Trapped in the middle of the conflagration, Frenchy's only hope for rescue is mountie Tom Jeffries, presently scouring the countryside in his scout plane. Jeffries' reasons for bringing Frenchy out safely are twofold: he must deliver the renegade lumberjack to the authorities, and he happens to be in love with Frenchy's sister Betty.

Northern Patrol was the last entry in Monogram/Allied Artists' off-and-on "Northwest Mountie" series. Taking time off from his Sky King shooting schedule, Kirby Grant stars as mounted policeman Rod Webb, while second billing is bestowed upon Webb's faithful dog Chinook. In this one, Webb tries to prove that the suicide of a young trapper was actually murder. The film offers a dash of novelty value in having the principal baddie turn out to be a beautiful woman (Marion Carr). Scripted by actor Warren Douglas, Northern Patrol was directed by Rex Bailey, the former assistant to the series' original helmsman, Frank McDonald.

Canadian Mountie goes undercover to catch his brother's killers.

Bill Ramsbottom sells his English pub and drags his family off to Canada where he has inherited a ranch from his grandfather Wild Bill Ramsbottom. He ends up tangling with outlaw Black Jake, an Indian chief Blue Eagle, and the local law.