A young heiress finds evidence suggesting that at night she acts under the influence of a family curse and has begun committing ghastly murders in a nearby park.

Gildersleeve has jury duty.

The Three Mesquiteers are forced to track down a train robbery ring after some of the gang hijack their truck for a getaway and the police conclude they are part of the gang, an identification which is just fine with the gang's nameless chief.

A man is bent on taking revenge on those responsible for his fiancée's death.

US Marshall Vance is assigned to rid the Oklahoma Territory of outlaws.

A man who has been framed on a murder charge is placed in the custody of a crooked U.S. marshal, who is secretly running a murderous claim-jumping gang.

With the advent of the American Civil War, three partners in a ranch see how this is destroyed. Needing money, will join the Confederate troops, each for their particular motivations.

While filming a western on location, the stand-in/stunt double for an egotistical cowboy movie star proves his heroics when a "fake" bank robbery turns out to be the real thing.

Alexander Graham Bell falls in love with deaf girl Mabel Hubbard while teaching the deaf and trying to invent means for telegraphing the human voice. She urges him to put off thoughts of marriage until his experiments are complete. He invents the telephone, marries and becomes rich and famous, though his happiness is threatened when a rival company sets out to ruin him.

An Australian nurse discovers an effective new treatment for infantile paralysis, but experiences great difficulty in convincing doctors of the validity of her claims.