A mad scientist, Dr. Aranya (Jackie Coogan), has created giant spiders in his Mexican lab in Zarpa Mesa to create a race of superwomen by injecting spiders with human pituitary growth hormones. Women develop miraculous regenerative powers, but men mutate into disfigured dwarves. Spiders grow to human size and intelligence.

An acerbic critic wreaks havoc when a hip injury forces him to move in indefinitely with a Midwestern family.

Educational short about the status of battle tanks and tank training in the U.S. Army in pre-War 1941, featuring a comical Army trainee from the Bronx.

Donald Lewis is a low-paid clerk in a high-profile shipbuilding firm. When the company is robbed in broad daylight, Lewis gathers up $100,000 on his own and skeedaddles, figuring that the lost funds will be attributed to the holdup. Before his girlfriend Ginny can persuade him to go straight, the hapless Lewis finds himself hotly pursued by cops and crooks alike.

Two escaped convicts are found hiding in a rocketship built by a renegade inventor, who forces them to become the crew for a trip to the Moon. Also on board, as inadvertent stowaways, are his assistant and his secretary; and none of them are aware that the inventor is actually a Lunarian explorer sent to Earth by the dying Lunar civilization and the only remaining male member of that civilization.

In a series of flashbacks, shows that attorney John Morland has given a lift to a hitchhiker who turns out to be a murderer. As a result, Morland himself is implicated in a killing. A pair of detectives discover that Morland has been having business problems and no end of difficulties with his wife Catherine. The trail of clues leads to a surprising revelation.

After several years of supporting parts, Victor McLaglen once more landed a leading role in Republic's City of Shadows. McLaglen plays Big Tim Channing, an ageing but powerful gangster who raises young newsboy Dan Mason as his own son. Upon reaching adulthood, Mason (John Baer) becomes a law student, with the covert (and illegal) help of Channing. Despite his checkered past, Mason opts for honesty when he falls in love with Fern Fellows (Kathleen Crowley). This decision ultimately spells the doom for Mason's mentor Big Tim.

In the future world of the year 2087, freedom of thought is illegal and the thoughts of the world's populations are controlled by the government. A small band of "free thinkers" send a cyborg back in time to the year 1966 to prevent a scientist from making the breakthrough that will eventually lead to the mass thought control of the future. Our time traveler soon discovers he is not alone when government agents from the future try to prevent him from carrying out his mission.

Duke Berne, former big shot but now a three-time loser, fears returning to crime because a fourth conviction will mean a life sentence. Finally, haunted by his past and goaded by his cohorts, he joins in planning an armoured car robbery.

Ex-con Red O'Hara becomes a daring news photographer, but his old ways get him into trouble.