Christine Hunter kills an intruder and tells her husband and lawyer that it was an act of self-defense. It's later revealed that he was actually her lover and she had posed for an incriminating statue he created.
Allied spies and Nazi Agents insinuate themselves at a Scottish cottage (converted to a wartime hospital) with interests on an inventor's nearly perfected bomb sight.
Margarita is found, naked and bloody in a luxurious house and is promptly taken to a mental institute. The doctors and nurses meant to take care of her aren't exactly who they seem and a mysterious figure, clad in black, circles the premise at night, offing nubile young women.
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.
An innocent dancer is accused of murder after his shoe prints are found at the scene, but his wife follows the trail of clues to find the real perpetrator.
Sally Lockhart crosses paths with the nefarious industrialist Axel Bellman, the richest and most powerful man in Europe. She's determined to prove him guilty of corruption and fraud, whilst Bellman will stop at nothing to destroy her case.
Leo, a former convict, is living in seclusion on an island with his step-daughter, the daughter of his late wife. Leo was framed by a group of former business associates, and he also suspects that one of them killed his wife. He has invited the group to his island, tempting them by hinting about a hidden fortune, and he has installed a number of traps and secret passages in his home. He is aided in his efforts by a former cell-mate who holds a grudge against the same persons. When everyone arrives, the atmosphere of mutual suspicion and the thick fog that covers the island promise a tense and hazardous weekend for everyone.
After three men are convicted of bank robberies, Charlie becomes suspicious. After some investigation Charlie finds the men are innocent and that the fingerprint evidence used to convict them had been forged. Charlie then proceeds to find the true bank robbers.
After leaving the British Secret Service, David Somers finds work catalouging butterflies at the country house of Nicholas and Jess Fenton. After the murder of a local gamekeeper, suspicion falls on their niece, Sophie Malraux. Somers helps Sophie to escape arrest and they go on the run together.
A young painter stumbles upon an assortment of odd characters at an English estate where he has been hired to give art lessons to beautiful Laura Fairlie. Among them are Anne Catherick, a strange young woman dressed in white whom he meets in the forest and who bears a striking resemblance to Laura; cunning Count Fosco, who hopes to obtain an inheritance for nobleman Sir Percival Glyde, whom he plans to have Laura marry; Mr. Fairlie, a hypochondriac who can't stand to have anyone make the slightest noise; and eccentric Countess Fosco who has her own dark secret. The artist also finds himself drawn to Marion Halcomb, a distant relation to Laura for whom the Count also has plans.
Charlie's visit to Paris, ostensibly a vacation, is really a mission to investigate a bond-forgery racket. But his agent, apache dancer Nardi is killed before she can tell him much. The case, complicated by a false murder accusation for banker's daughter Yvette, climaxes with a strange journey through the Paris sewers.
While Charlie is distracted with the birth of his first grandchild, son Jimmy impersonates his father in order to investigate a murder aboard a freighter in the harbor.