In 1932, a cop is killed and Frank Wiecek sentenced to life. Eleven years later, a newspaper ad by Frank's mother leads Chicago reporter P.J. O'Neal to look into the case. For some time, O'Neal continues to believe Frank guilty. But when he starts to change his mind, he meets increased resistance from authorities unwilling to be proved wrong.

It is prior to the commencement of World War II, and Japan's fiendish Black Dragon Society is hatching an evil plot with the Nazis. They instruct a brilliant scientist, Dr. Melcher, to travel to Japan on a secret mission. There he operates on six Japanese conspirators, transforming them to resemble six American leaders. The actual leaders are murdered and replaced with their likeness.

Young female models are being strangled. Will law enforcement be able to stop the crime wave before more women become victims?

A Nazi spy ring is after a chemical formula that increases the power of ordinary gasoline for U.S. Army aviation use. Two U.S. chemical companies are developing the formula, with each working on half for security purposes. The spies get half the formula and know that either of two chemists, Robert Norton or Tom Fielding, knows the rest. They capture Fielding, through a ruse by gang member Linda Pavlo, and threaten the life of his sister Nancy and his mother if he does not give them the formula. To protect his friend Fielding, who does know the formula and is engaged to Nancy, Tom pretends to know the secret and boards the Dawn Express plane with the spy leader and his gang.

Circumstances force naive Rita Adams into serving an unjust prison term, but she emerges from it a cynical criminal who rises to power in the local crime organization.

A small-town spinster, who's a born romantic, takes on the strict members of the local "Purity League" by spilling a few of their well-kept secrets. Comedy.

Steven Sims is a diamond merchant who bullies his kindly hard-working clerk and disappoints his expectations when he takes into partnership an aristocratic ne'er-do-well.

A condemned inmate's premature death places officials under suspicion.

A recently retired fire captain suffers from boredom, until one of his friends is killed battling an arson fire. It becomes his purpose in life to track down the arsonist. As he gets closer to finding the killer, things become dangerous for him and his family.

A dedicated FBI agent recalls the agency's battles against the Klan, organized crime and Communist spies.