Socialite Letty Lynton is returning to New York, abandoning one-time lover Emile Renaul in South America, when she strikes up a shipboard romance with Jerry Darrow. Renault is waiting for her in New York and will not leave her alone, so she poisons him. When detectives take her to the D.A.'s office, Jerry cooks up an alibi.

A radio detective sets out to solve an old murder case, with the help of her sound man and another radio detective. They manage to talk to the people involved in the case, but shortly afterwards the main suspects turn up dead.

Accused of killing her employer, financier Bjorn Faulkner, Kit is championed by wisecracking sailor-on-leave Steve Van Ruyle, who has a vested interest in the outcome of the trial.

Nazi spies use a stolen shortwave transmitter prototype to broadcast top secret shipping info to an offshore Japanese sub. To nab the spy ring, the Government has the West Coast's top radio engineers fired and shadowed to see if the Nazis recruit them to complete work on the prototype radio. Radio engineer Lew Deerhold, a resident alien without a job to pay for his adorable little ward Gina's life-saving operation, falls prey to the spy ring, and is swept up in a maelstrom of deceit and danger.

A female cabbie is suspected of killing her drunken husband.

An American missionary is gradually seduced by a courtly warlord holding her in Shanghai.

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

A beautiful Austrian refugee in England--who is also a Nazi agent--marries a scholarly English pacifist. He lives near a secret military base she needs to get information about so she can help in Hitler's planned invasion of England.

Kurt Ingston, a rich recluse, invites the doctors who left him a hopeless cripple to his desolate mansion in the swamps as one by one they meet horrible deaths.

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