Case Britton, gunslinger and wanted man, comes to town to meet his bride-to-be, stop a stagecoach robbery, and get even with the man who killed his brother.

Joe Branch, reputed to be the son of Jesse James, comes riding into Coffeyville Kansas, looking for proof one way or the other regarding the question of who his father was.

Humble stamp dealer Otto Becker has little to do with international politics, so when he receives a surprise visit from his estranged twin brother and Nazi spy, Baron Hugo von Detner, his world is thrown into turmoil. Threatening Becker with deportation, Hugo forces him to use his shop as a front for espionage.

In Chicago, an unemployed actor aims to solve the mystery concerning a string of ax murders, apparently committed by a lunatic.

When a businessman who has had a double indemnity policy taken out on him dies mysteriously, his insurance company sends an undercover investigator to town to determine exactly what happened.

A San Francisco private eye finds himself under suspicion while investigating a prizefighter's murder.

Jungle-Jim type Johnny Weissmuller helps Professor Blakely look for a missing colleague who is now playing "god" for a bunch of natives.

Jungle Jim is forced to lead anthropologist Dr. Edwards into a land inhabited by giant people.

Spotted after he microfilms secret U.S. Navy documents, foreign agent Rattick is killed when he tries to make a getaway. Naval Intelligence officer Captain Wright and Operative Dale are assigned to investigate and determine who is behind the spy syndicate for which Rattick worked. They bring in the services of Agent Tom Norman, who bears a strong resemblance to Rattick.

Vincent Doane is in the precarious position of trying to close an advertising account with his rich ex-fiancée. Unfortunately she is more interested in him than in business. Vincent's wife Paula gets suspicious and finally decides to do some flirting of her own to make him jealous. Unknown to her, she chooses cigarette tychoon Claude Kimball. In fact, Kimball hits it off well with both of the Doanes. The question is whether or not their marriage can survive all the shenanigans.

Rival reporters Sam Craig and Tess Harding fall in love and get married, only to find their relationship strained when Sam comes to resent Tess' hectic lifestyle.