Just out of jail and vowing to go straight, former jewel thief Boston Blackie, undertakes the reformation of a pretty blonde who has stolen a necklace from a cabaret dancer. He learns that the jewel belongs to the mother of the blonde girl, and the blonde's philandering father gave it as a gift to the cabaret girl. Now, Blackie must find a way to return the necklace to the owner's safe without arousing the suspicions of the girl's family.

During a wild party, Wilbur Gale hits another man and, incorrectly believing that he has killed him, flees to the Northwoods. Wilbur's dog, North Star, runs away and is taken in by Noel Blake, a newspaper reporter. Receiving a letter from her brother, Marcia Gale sets out to find him, taking with her Dick Robbins, a false friend who sees an opportunity for blackmail...

Silent version of the classic Jack London tale.

David thinks he has killed a man during a fight over his dog, Strongheart, so he escapes to a small town far up north. The only girl living up there is an orphan, Sally, and David falls in love with her. Strongheart decides to search for love himself and lures Lady Jule, a female shepherd, away from a pack of timber wolves.

Brawn, played by Strongheart, rescues a young woman from a snowstorm and a human killer.

A wolfdog is wrongly accused of sheep killing. Based on the novel by Hal G. Evarts.