The best Martin Kosleck’s mystery movies

The European war was only beginning to erupt across national borders. Johnny Jones, an American crime reporter dispatched by his New York publisher to put a fresh spin on the drowsy dispatches emanating from overseas, has a nose for a good story—which promptly leads him to the crime of fascism and Nazi Germany's designs on European conquest. In attempting to learn more about a seemingly noble peace effort, Jones walks into the middle of an assassination, uncovers a spy ring and—not entirely coincidentally—falls in love.

After the King of Ruthenia has been assassinated, Holmes and Watson are engaged to escort his son to Europe via Algiers, aboard a transatlantic ocean liner which also carries a number of suspicious persons, any of whom may be involved in a plot to also assassinate him.

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.

An unsuccessful sculptor saves a madman named "The Creeper" from drowning. Seeing an opportunity for revenge, he tricks the psycho into murdering his critics.

Philo is in Vienna working for the US Government to see if Archer Coe is selling aircraft designs to foreign powers. He grabs the plans with Archer's signature, but is captured by police before he can escape. Deported he comes back to America and plans to confront Archer, but Archer is found dead in his locked bedroom with a gun in his hand. While it looks like a suicide, Vance knows better and the coroner finds that Archer has been shot, hit with a blunt instrument and stabbed - making suicide unlikely. But Vance is on the case and is looking to see if government secrets have been sold and who has murdered Coe. This is a remake of "The Kennel Murder Case" using aircraft designs and espionage instead of Chinese porcelain and dog shows.

In the 7th film of the "Crime Doctor" series based on the radio program, Dr. Robert Ordway is summoned to take attend a diabetic, and gives an injection of insulin taken from a bottle in the patient's pocket. The man dies and Ordway discovers that what he thought was insulin was really poison. Oops! Two other people are murdered before Ordway discovers who replaced the insulin with poison and what the motive was

An ex-cop is suspected of murder after he is found with a dead woman. The private detective is on the run -- attempting to prove his innocence.

Detective Nick Carter is brought in to foil spies at the Radex Airplane Factory, where a new fighter plane is under manufacture.

When a man dies of a heart attack, a stage and radio mentalist believes he has willed him to die because he was angry with the man. Riddled with guilt, the mentalist cancels further shows, breaks off his engagement to his female partner, who can read minds while in a hypnotic trance, and takes refuge in the eerie wax-museum-cum-home of another woman friend.