Lots of slogans such as "Be like Dad, Keep Mum" and "Keep it under your Hat" are visible on the walls in various scenes to reinforce the plot of this British wartime movie illustrating how gossipy talk can result in unknowingly giving valuable information to Nazi spies.

In 1948, immediately before a ceasefire takes effect, four volunteers fighting for Israel are ordered to take Hill 24, overlooking the road to Jerusalem.

This tale of intrigue finds Valentina Cortese involved in an assassination plot. She helps the police apprehend the conspirators after an innocent bystander is accidentally killed.

Twenty years ago, old Mrs. Barlow was killed in her home at 12, Pimlico Square for her priceless rubies. The murderer searched the whole house without finding them, then disappeared. The house has been empty since then, but now Paul and Bella Mallen move into the apartment. Bella Mallen suffers from forgetfulness and nervousness - at least that is what her husband tells her. An elderly horse wrangler, B.G. Rough worked as a policeman twenty years ago and still remembers the unsolved case. He notices that Mr. Mallen looks just like Louis Barre, Mrs. Barlow's nephew. And why does Mr. Mallen so mysteriously leave every night just to go into the apartment next door, nr. 14?

An elderly countess strikes a bargain with the devil and exchanges her soul for the ability to always win at cards. An army officer, who is also a fanatic about cards, murders her for the secret, then finds himself haunted by the woman's spirit.

During a charity football match between Arsenal and touring amateur side Trojans, the Trojan's new star player collapses and dies. Inspector Slade of Scotland Yard is called in and declares it was murder. It takes all his ingenuity and another death before the motive is discovered and the killer revealed.