Johnny Tyronne, action movie star and ladies man, is traveling through the Middle East on a goodwill tour to promote his latest movie, "Sands of the Desert". Once he arrives, however, he is kidnapped by a gang of assassins who were so impressed with his on-screen adventures that they want to hire him to carry out an assassination for them.
A terrified stewardess is stalked by her psychotic estranged husband.
Test space rockets exploding at liftoff and increased reporting of UFO sightings culminate in a direct attempt by alien survivors of a dead, extra-galactic civilization to invade Earth from impervious flying saucers, using ray-weapons of mass destruction.
Former bandit Jim Dancer becomes marshal of a Kansas town and cleans up the criminal element - with the help of his old pal, Jesse James.
A surveyor for the Canadian Pacific Railroad must fight fur trappers who oppose the building of the railroad by stirring up Indian rebellion.
Cole Armin comes to Albuquerque to work for his uncle, John Armin, a despotic and hard-hearted czar who operates an ore-hauling freight line, and whose goal is to eliminate a competing line run by Ted Wallace and his sister Celia. Cole tires of his uncle's heavy-handed tactics and switches over to the Wallace side. Lety Tyler, an agent hired by the uncle, also switches over by warning Cole and Ted of a trap set for them by the uncle and his henchman.
Gunfighter "Brazos" Kane lays aside his guns "forever" when he is forced to shoot his best friend, and decides to join another friend, Bob Tyrell, as a cowhand on the Inskip ranch. Upon arriving there he finds the bullet-riddled body of his friend. He carries the body to the Banner ranch, the largest in the territory, and is accused by Banner of murdering Tyrell; Banner orders Deputy Sheriff Bill Yount, who is in Banner's pay, to arrest Kane. But Kane has the sympathy of Banner's daughter, Jane, who notifies Inskip of Kane's plight, and Inskip arrives in time to prevent a lynching. Sheriff Kiscade dismisses the murder charge for lack of evidence. Brazos then sets out to find the killer of his friend. Bess Bannister, Jane's sister, is in love with the Banner ranch foreman, Bard Macky, and knowing that Bard killed Tyrell and that Kane will track him down, then hampers Kane's mission somewhat by pretending to be in love with him.
Buster Crabbe and Johnny Weissmuller battle it out in Cajun country! Johnny, a riverboat pilot on the Mississippi, is seduced away from his fiance (Carol Thurston) by a rich outsider (Virginia Grey) who's nursed him back to health after a serious accident. She owns a large piece of the swamp and has outlawed hunting on her property. His rival Mike (Crabbe) is a trapper who harbors deep resentment for Johnny and his new wealthy friends. When he feels Johnny is responsible for the hunting ban, he resorts to destructive acts of vengeance.
A fugitive receives help from a victim's sister as he tries to clear his name of robbery and murder charges.
Nazi spies use a stolen shortwave transmitter prototype to broadcast top secret shipping info to an offshore Japanese sub. To nab the spy ring, the Government has the West Coast's top radio engineers fired and shadowed to see if the Nazis recruit them to complete work on the prototype radio. Radio engineer Lew Deerhold, a resident alien without a job to pay for his adorable little ward Gina's life-saving operation, falls prey to the spy ring, and is swept up in a maelstrom of deceit and danger.
In the middle of a pictorial lecture on his recent expedition to the Mongolian Desert, Dr. John Benton,the famous explorer, drinks from the water bottle on his lecture table, collapses and dies. His last words "Eternal Fire" are the only clue Chinese detective Jimmy Wong and Captain Street of the police department have to work on.
A wisecracking New York reporter intrudes on a research scientist's quest to unmask The Moon Killer.