A mad scientist named Dr. Satan plots to steal key pieces of technology to enable him to build an army of robots based on his prototype to conquer America. The only one standing in his way is Bob Wayne, who fights Satan as the enigmatic Copperhead. Mysterious Doctor Satan is a 1940 film serial named after its chief villain. Doctor Satan's main opponent is the masked mystery man, "The Copperhead", whose secret identity is Bob Wayne, a man searching for justice and revenge on Satan for the death of his step-father. The serial charts the conflict between the two as Bob Wayne pursues Doctor Satan, while the latter completes his plans for world domination.

A mentally unstable man, who has been kept in isolation for years, escapes and causes trouble for his identical twin brother.

College students attempt to solve a series of murders on campus while also trying to put together the school's big show.

It's no accident when wealthy Charles falls for Jean. Jean is a con artist with her sights set on Charles' fortune. Matters complicate when Jean starts falling for her mark. When Charles suspects Jean is a gold digger, he dumps her. Jean, fixated on revenge and still pining for the millionaire, devises a plan to get back in Charles' life. With love and payback on her mind, she re-introduces herself to Charles, this time as an aristocrat named Lady Eve Sidwich.

Romanian-French gigolo Georges Iscovescu wishes to enter the USA. Stopped in Mexico by the quota system, he decides to marry an American, then desert her and join his old partner Anita, who's done likewise. But after sweeping teacher Emmy Brown off her feet, he finds her so sweet that love and jealousy endanger his plans.

Capitalizing on the famous radio 'feud' between comedians Jack Benny and Fred Allen. The two stars play versions of themselves, constantly at each other's throats due to real and imagined slights.

Tom Cameron must prove himself innocent after he is wrongfully charged with the murder of a prison guard.

Victor Ballard, a happy-go-lucky albeit impoverished sidewalk photographer, shares a New York City studio apartment with Polish immigrant painter Stefan Janowski. The big city doles out joy and misery indiscriminately: In the apartment below Victor and Steve, Gus Nelson learns that his wife has given birth to quintuplets, while the lonely tenant in the apartment below Gus has given up on life and committed suicide.

Young intern Jeff Burton, impulsively offers a lift to an odd-looking gentlemen. It soon turns out that Jeff's passenger is an inventor has just escaped from a shady sanitarium, where he has been held prisoner by Nazi spies.