Following a long investigation, Police Detective-Lieutenant Anthony "Tony" Roberts becomes convinced that there is some powerful unknown-master-mind leader behind the gangs of crooks who are terrorizing the city, and it has something to do with paroled convicts. He sets up a scheme with his supervisor to have himself shamed by being demoted to a patrolman and then caught in the act of receiving bribe-money from a racketeer. He is convicted and sent to prison, and the manner in which his parole is arranged leads him, dangerously, to the secret-head of the gang.

The boys buy a uranium mine out west, but when they get there they find that it's pretty much worthless. However, the local badmen are distrustful of these new strangers, and when they mistakenly get the impression that the mine is loaded with uranium, they hatch a scheme to get rid of the boys and take over the mine.

An ex-gunfighter woos two women while avenging his brother, victim of a crooked gambler.

A young lady plans her devious revenge on a Russian aristocrat of fantastic wealth, who will not give her his permanent affections.

Indore, an Indian woman married to the English Captain Terence Unger is imprisoned by the prince after she gives birth to a baby daughter named Agatha. On his deathbed, Unger beseeches his friend Francis Duane to care for Agatha which Duane does, returning to England with the infant.

After his defeat at the hands of "Spider" Flynn, the welterweight champion of Europe, boxer Jimmie Dolan and his trainer, Thomas Jefferson Jones, leave for a principality near Paris. Having lost all their money on the fight, Jimmie accepts Count Conrad's offer to impersonate Prince Frederick in return for a large sum of money.

Tim Dale is the son of the president of a big-city telephone company and quits his job following a dispute with his father over company policy. He takes up polo playing. Circumstances force him to give up his polo-playing and take on the job of helping a small-town telephone company overcome a plan by a gang to force the company out of business. He calls in his telephone-company pals Bob Hall and Jack to aid him against the crooks led by Matthews and Jackson, working for crooked lawyer Thomas Benton.

Shipwrecked fugitives try to escape a brutal sea captain who's losing his mind.

Tired of her friends and life as a society leader, Ninon Le Compte goes north to the Hudson Bay area to inspect trapping holdings inherited from her uncle.

Galen Albret (Noah Beery) is the factor, or manager, of an important trading post of the Hudson Bay Company. He's also a jealous and vindictive man, and because he believes that Graham Stewart (Edward Martindel) has slept with his wife, he sends him into the Northwoods to die. Stewart's son, who grows up with the name Ned Trent (Jack Holt), swears revenge.