Engineer Johnny Munroe is enlisted to build a railroad tunnel through a mountain to reach mines. His task is complicated, and his ethics are compromised, when he falls in love with his boss's daughter

A young outlaw gets involved with a gang of crooks. When he tells them he is breaking away, they threaten to pin a false murder charge on him. But he is rescued and reformed by his sister, and an undercover agent for the express company.

Knowing the railroad is coming, Carter is after the rancher's land. Bob and Chito return just in time to save Banker Stockton and his money from Carter's men. When Stockton then lends the ranchers money, Carter has them burned out. Bob knows Carter is responsible and when Carter's henchman Saunders is recognized, Bob goes into action.

Cops go under cover to track down a Mafia drug kingpin who has re-entered the country to sell "junk" to the prostitutes and "hopheads" on Bourbon Street. Edited from TV series N.O.P.D.

A lawman sets out to disrupt the operations of a crooked town boss.

Bat Masterson's old friend Billy Burns convinces him to become marshal of Liberal, Kansas and help the residents fight drought and a destructive range war.

West of Carson City remains one of the best of Johnny Mack Brown's Universal westerns. The story takes place in a gold-rush community where the locals are taken to the cleaners by duplicitious Eastern gamblers. When it becomes obvious that the local constabulary has been "bought off" by the crooks, two-fisted cattleman Jim Bannister (Brown) swings into action. The film's highlight is an outsized fistic brawl between the hero and secondary villain Breed, played by loose-limbed comic stuntman Frank Mitchell.

Nightclub entertainer Ruby Carter moves from St. Louis to New Orleans to escape Tiger Kid. At Ace Lamont's club, she gains fame but faces drama with Ace's ex Molly. A jewel theft and fixed fight lead to confrontations.

Just as Nevada wins $7000 in yellowback bills, Ben Ide takes his $7000 and heads out to buy mining equipment. Burridge has his man Powell kill Ide and retrieve the money and Nevada finds Ide just as the posse arrives. Found with the money Nevada is arrested and Burridge now gets Powell to incite the local citizens to lynch Nevada.