Arizona Bad Man

A young reporter's grandfather wins a sweepstakes, but it turns out that his ticket is phony. The reporter finds out that the police are looking for the criminal ring responsible for the phony-sweepstakes racket, so he and his young brother set out to track down the gang responsible and expose them.

A rancher, frustrated with constant cattle rustling and the inability of the local sheriff to stop it, is accused of murder when the sheriff is found dead.

The Range Busters investigate sabotage at a mining community and uncover a gang of Nazi spies.

Cowboy Larry O'Day and his sidekick Lucky Smith happen upon a distraught Barbara Hartwell, who is about to be arrested for the murder of her uncle. With Barbara behind bars, Larry is determined to find the real killer and soon finds himself in the middle of a mystery involving crazed German entomologists and a smuggling ring bringing Chinese "picture girls" across the Mexican border for sale to wealthy Chinese bachelors.

Gold stages are being held up in the far west at a time when the U.S. government needs bullion, just before the famed "Black Friday" attempt to corner the gold market.

In the midst of some friendly horseplay on their "Flying R" ranch, the Range Busters, Crash Corrigan, Dusty King and Alibi Terhune, are sobered by the arrival of a buckboard bearing their old friend Larry Meadows and his niece Dorrie Willard. Meadows seeks their aid against a gang of outlaws terrorizing his town. Ernie Willard, Dorrie's brother, has been taken in by Tex Laughlin who is using the Willard ranch as an undercover for his real occupation as a member of a gang of outlaws led by Tim Douglas, a supposed friend of the Willards.

Having trouble with outlaws, Marshal Graham sends for his friends the Range Busters. Newspaper editor Ross, dissatisfied with Graham, forms a vigilante committee and puts Jim Dawson in charge not knowing he is the leader of the outlaw gang. Dawson then has his men frame Crash and Dusty for robbery and murder and then has them set out to lynch the two.

Reb Russell (Reb Russell), undercover agent for the Cattleman's Protective Association, goes into the stronghold hideout of rustler chief Bull Thompson (Fred Kohler) posing as an outlaw. He falls in love with Marion, Bull's step-daughter. Juan (Dick Botiller), a gang member once jailed by Reb, reveals Reb's true identity, but he will be given his and Marion's freedom to leavy the valley if he can beat Thompson in a fight. He does, but Butch Greer (Jack Rockwell), a gang member trying to take over from Thompson leads the gang after the pair, after first revealing to Thompson that Reb is Thompson's own son, whom he last saw as a baby when Thompson, then known as Big Bill Russell,was forced to flee the law. Thompson and loyal gang member Blackie (Edmund Cobb), who was once helped by Reb, go after the gang in an effort to help Reb and Marion escape.

Brade has hired Rattler Haynes to kill Tom Shaw. But when Shaw intercepts a message between the two, he alters it hoping it will cause the two outlaws to fight each other.

A Phantom is murdering the hands at the Circle T Ranch. The Range Busters are recruted by the owner of the Circle T to stop the Phantom and discover his identity. (First film in the Range Buster series.)