Dr. Henryk Savaard is a scientist working on experiments to restore life to the dead. When he is unjustly hanged for murder, he is brought back to life by his trusted assistant. Re-animated he turns decidedly nasty and sets about murdering the jury that convicted him.

In this newspaper drama, a female reporter and a newsreel cameraman are both assigned to cover the Sino-Japanese war. They meet on the boat ride over and decide to team up. They are further assisted by a Chinese cameraman. The three of them manage to expose of spy ring operating out of the Shanghai office of the woman's newspaper.

There's a monster running around loose in the house Hugh is showing to two prospective clients.

Two federal agents battle a gang that hijacks trucks carrying materials vital for the security of the country and sells them to foreign powers.

Doan is trying to get control of the valley by having his night riders drive the ranchers out. Jack Benson hires on at the Williams ranch, the one ranch Doan must have. When Benson learns that Doan is the boss of the night riders, he joins up with him. He has a plan that both saves Williams' ranch and also brings Doan to justice.

Thad Lawson arrives in Oak Valley to avenge the murder of his brother, the local sheriff. He learns that Jack Rand, powerful overlord of the town is to blame. After Rand murders newspaper publisher Jordan Webster, Thad sets out to put him behind bars.

There is a range war between the ranchers led by Tilden and the outlaw gang of Link Carson. Wanted outlaw Dude Ramsey arrives and joins up with Tilden. First he saves the ranchers from Carson's trap and then exposes Pearson as Carson's informant and killer of Steve Warner.

Sir James Blake has retired from Scotland Yard so that he can assist his niece Hope and her friend Jerry in developing an apparatus they have invented. Sir James thinks that their invention has the potential to prevent wars, and plans to donate it to the League of Nations. But a gang of criminals led by the elusive "Scorpion" steals the device, and Blake and his associates must recover the invention and determine the identity of the "Scorpion".

A Nazi spy passes himself off as an optometrist in San Francisco's waterfront district. Someone robs him of his code book, and he must get it back.

Four flying G-Men protect America against enemy spies; one of the four assumes the identity of The Black Falcon, to befuddle the saboteurs even further.