Scotland Yard detectives attempt to solve a spate of safe robberies across England beginning with clues found at the latest burglary in London. The film is notable for using a police procedural style made popular by Ealing in their 1950 film The Blue Lamp. It is known in the US as The Third Key.

A classic British thriller set in a sinister old house, based on a story by Edgar Wallace.

Unsuccessful writer Aylmer Franklyn takes the chance to change identities after he discovers a corpse. However, he soon finds himself accused of the murder of a maid at a near-by boarding house.

In 1880, the criminal called The Wolf is responsible for a murderous rampage in France. When the Brisson Bank is robbed in Paris and the employee Michelle is murdered, the wealthy Chevalier Lucio del Gardo is the only chance to save the bank. Chevalier proposes to the owner M. de Brisson to deposit a large amount of gold, but in return he would like to marry his daughter Cecile. However, Cecile is in love with the efficient clerk Lucien Cortier that belongs to the lower classes and refuses the engagement. In order to get rid off the rival, Chevalier uses evidences to incriminate Lucien, manipulating the incompetent Parisian chief of police.

Norman Pitkin and Mr Grimsdale are council workmen mending the road outside an Army base when they come into conflict with the military. Shortly afterwards, they get drafted and fall into the clutches of the Sergeant they have just bested. They are sent to France to repair roads in front of the Allied advance but get captured. Pitkin takes advantage of a useful similarity to impersonate General Schreiber and manages to return a hero

A writer of murder mysteries finds himself caught up in a string of murders in London.

A yacht in the English Channel is helped to port - when the police arrive there are no crew, no papers and no clues. What is the mystery of the ghost ship?

When his best friend is murdered inside a London dancehall, a cab driver and his girlfriend involve themselves in the investigation and discover a major criminal operation hiding behind the club's friendly facade.

Max Foster (Carl Betz), an American newspaper reporter, is in Hong Kong to assist a defecting Russian diplomat. In return for arranging an escape, the diplomat must turn over to Foster a diary revealing the true events taking place in China. While making his escape, the defector is killed ant the diary vanishes. The reporter sets off on a search for it, from Hong Kong to Australia. The chase ends in an action-filled climax, with the journalist finally meeting up with "That Lady from Peking" (Nancy Kwan) - the diplomat's daughter.

While on vacation, the Saint discovers a much-sought-after music box.