A neurosurgeon relates to his students in medical school a story about an affair he had with a married woman and how after the affair was over, the woman fell…

A gang of criminals, which includes a piano player and an imposing former convict known as ‘Gruesome’, has found out about a scientist’s secret formula for a gas that temporarily…

Humble stamp dealer Otto Becker has little to do with international politics, so when he receives a surprise visit from his estranged twin brother and Nazi spy, Baron Hugo von…

Two industrialists disappear from an airplane while the plane is in the air. Also missing is $100,000. The Falcon investigates and discovers a plot against the government.

The “Tri-State” gang goes on a successful bank robbing streak causing local authorities to turn up the heat on the daring career criminals.

An ex-con trying to go straight must face a crazed criminal out for revenge.

Neale and Pedro fly cargo between Chungking and Calcutta. When their buddy Bill is murdered they investigate. Neale meets Bill’s fiancée Virginia and becomes suspicious of a deeper plot while…

A young mechanic gets a job with a small airline, which he helps win a mail contract. A rival airline plots to destroy it in order to get the contracts…

Police Chief Jim Fitzpatrick is after gangster Sam Belmonte. He uses his police detective brother Ed to watch over Daisy who is associated with Belmonte but things don’t go as…

Two narcotics agents go after a gang of murderous drug dealers who use ships docking at the New York harbor to smuggle in their contraband.

A security leak is found at a Southern California atomic plant. The authorities stand in fear that the information leaked would go to a hostile nation. To investigate the case…

Police detectives battle the League of Murdered Men, a gang of resurrected dead criminals.