Holmes and Watson board a passenger train bound from London to Edinburgh, to guard the Star of Rhodesia, an enormous diamond worth a fortune belonging to an elderly woman of wealth; but within the first hour of the trip, the woman's son is murdered and the diamond stolen and any of the passengers in their car could be the killer thief.
Sherlock Holmes investigates when young women around London turn up murdered, each with a finger severed. Scotland Yard suspects a madman, but Holmes believes the killings to be part of a diabolical plot.
Cecile, a young girl who goes to the offices of the Judicial Police several times in a row to complain about nightly visits to the apartment she occupies with her aunt, is not taken seriously by the police until she the day she is found murdered.
A woman returning home falls asleep and has vivid dreams that may or may not be happening in reality. Through repetitive images and complete mismatching of the objective view of time and space, her dark inner desires play out on-screen.
In the midst of World War II, Sherlock Holmes rescues the Swiss inventor of a new bomb-sight from the Gestapo and brings him to England, where he quickly falls into the clutches of the evil Professor Moriarty.
Pepe Le Moko is a notorious thief, who escaped from France. Since his escape, Moko has become a resident and leader of the immense Casbah of Algiers. French officials arrive insisting on Pepe's capture are met with unfazed local detectives, led by Inspector Slimane, who are biding their time. Meanwhile, Pepe meets the beautiful Gaby, which arouses the jealousy of Ines.
Marion Hastings returns to her father Dan's cattle property in western Queensland after being away in Europe for fifteen years. She is treated with hostility by her father's foreman, Dick Drake, and her father's neighbour, Don Lawton.
While vacationing in St. Moritz, a British couple receive a clue to an imminent assassination attempt, only to learn that their daughter has been kidnapped to keep them quiet.
When a radio star is found murdered in her home, everyone assumes that the mysterious young woman discovered with her is the culprit — everyone, that is, but newspaper reporter Jerry Beall, who sets out to prove her innocence.
When a movie actor is shot and killed during production, the true feelings about the actor begin to surface. As the studio heads worry about negative publicity, one of the writers tags along as the killing is investigated and clues begin to surface.
When actress Diana Baring is found in a daze beside her colleague’s murdered body, all evidence points to her guilt. During the trial, juror Sir John Menier doubts the verdict, but yields to pressure. Haunted by remorse, he launches his own investigation.
Rich old Cyrus West's relatives are waiting for him to die so they can inherit. But he stipulates that his will be read 20 years after his death. On the appointed day his expectant heirs arrive at his brooding mansion. The will is read and it turns out that Annabelle West, the only heir with his name left, inherits, if she is deemed sane. If she isn't, the money and some diamonds go to someone else, whose name is in a sealed envelope. Before he can reveal the identity of her successor to Annabelle, Mr. Crosby, the lawyer, disappears. The first in a series of mysterious events, some of which point to Annabelle in fact being unstable.
After a man kills two members of his Yukon gold prospecting team, the other two surviving members struggle to keep him subdued for the next several months until they can turn him over to the law.
A film projectionist longs to be a detective, and puts his meager skills to work when he is framed by a rival for stealing his girlfriend's father's pocketwatch.
The sinister Count Oetsch scandalizes the aristocratic social gathering at Castle Vogelod as he announces his intention to "crash" the festivities. Baroness Safferstätt is expected shortly, and the guests are well-aware of the rumors that Count Oetsch murdered the baroness' late husband. Oetsch refuses to leave, vowing that he will reveal the identity of the real killer. Before the weekend is through, the Count and Baroness will reveal secrets too shocking to be believed!