A scientist possessing the formula for making a nuclear bomb finds himself chased by evil gangsters in this thriller that was made just after the A-bomb was dropped upon Hiroshima.

U.S. Marshal Johnny Mack Brown once again goes undercover in this Nevada Mckenzie series entry from Great Westerns Prod./Monogram. Masquerading as a parson and a drifter, Sandy Hopkins (Raymond Hatton) and Nevada Jack McKenzie (Mack Brown) come to the aid of the beleaguered residents of Goldville, a small ranching community being terrorized by greedy saloon keeper Ace Benton (Kenneth MacDonald) and his gang of cutthroats. Unbeknownst to the citizenry, the railroad is planning to build tracks through town and Benton is attempting to secure the land by scaring off the settlers.

Sergeant MacLane of the Mounties investigates the disruptive activities of a bunch of troublemakers.

Recently released from prison, nice guy Dave Collins finds himself unwillingly mixed up with his old outlaw acquaintances Turk Thorne and his gang as they try to use his telegraphy talents to zero in on the arrival of a gold shipment on the local train. Taking a liking to Collins, cowboys Tim Holt and Chito Rafferty get him to agree to help set a trap for the train robbers

Mike Wein, an Alaskan bush pilot operating the the Bering Sea area, makes friends with John W. Wetherby, posing as a wealthy United States businessman. But, in reality, he is a Russian spy on his way to Siberia carrying microfilms of the United States' defense installations.

A doctor testing drugs on convicts gets mixed up in a murder investigation.

An accused killer is granted a reprieve when his victim returns to town in the flesh after an eight-year absence.

The stooges are dance instructors sent by a movie company to a tropical island to teach the natives how to dance so they can appear in a movie. The boys run into trouble with the local witch doctor who wants to add their heads to his collection. The stooges defeat the witch doctor with hand grenades they swipe from a multi-armed idol, and get on with the dancing lessons.

Mandrake and his team attempt to prevent "The Wasp" from stealing and using a new Radium invention.

The stooges do a good turn and help a stranger open a safe in what they think is the man's house. Actually the man is a crook and the boys were unwitting accomplices to a robbery. Once they realize what's happened, the stooges go after the bad guy and who's left on the train to Los Vegas. The boys trap the villain and recover the booty.

The stooges apply for job as 'Yard Men' at Scotland Yard, thinking they'll become detectives, but instead wind up as gardeners. When they accidentally see a memo about the theft a famous diamond, the boys decide to go after the crooks. They find the crooks, but Shemp accidentally swallows the diamond which was hidden in a bowl of candy. The bad guys want to cut the diamond out, but the boys foil them with the help of a friendly gorilla.

A murder is committed during the auction of a valuable statue. The prime suspect is Boston Blackie, whose reputation for living on the edge of the law makes him an easy target for the police. When the body disappears, Blackie must find it to prove his innocence.

An undercover agent wrongly punished for murder is paroled to a remote tropical island with a diamond mine slave labor run by a sadistic foreigner.

The Apaches are on the warpath and the Army must defend them. Murphy's mission is to get a shipment of rifles, but it's stolen by greedy white traders with the help of mutinous soldiers