The House of Secrets

A Parisian cop sets out to solve a sudden series of crimes, including robbery and blackmail. Based on a novel by Émile Gaboriau.

Jack Lane (William Stowell) has made an invention for photographing wild animals. It consists of a camera with a trigger - when the trigger is stepped on by a passing animal, a flash goes off and the camera shoots the picture. Lane goes up to the mountains to try out his new contraption. When a recluse refuses to let him spend the night in his cabin, Lane goes to sleep out of doors, with the camera set up near by. In the middle of the night, he is awakened by the flash and the sound of gunshots. Trekking back to his own cabin the next day, he develops the picture, which is of a girl holding a rifle. He returns to the recluse's cabin where he is arrested for murder.

Millionaire Joshua Barker insists that his daughter, Faith, must marry Phil Langhorne, a man that neither likes, and Faith is in love with and eager to marry her childhood sweetheart, John Temple.

Hard-working insurance company bookkeeper John Carter, comes home Easter eve to his suburban cottage with a potted lily for his loving wife and two daughters. The Carters live happily until cashier Charles Ryder is murdered by the night watchman, a "coke sniffer" in need of money, and Carter is accused because he worked with Ryder that evening.

Babs Van Buren saves her lover from the electric chair and at the same time extricates her older sister, Connie from a trying situation.

While touring Algiers, Mrs. Osborne and her daughter, Winnifred, make the acquaintance of Schuyler Van Norden, a young American banker. At a little booth, Mrs. Osborne purchases "The Moonstone of Fez." On their way to their hotel, Winnifred and her mother are accosted by a beggar, who seizes Mrs. Osborne's hand and insists upon telling her fortune. The following night they retire in adjoining rooms. In the morning, Winnifred is frightened to find her mother has mysteriously disappeared.

Drama critic Stanley Ormsby, after giving a new play a negative review finds himself embroiled in a murder mystery involving some of the play’s troupe all occurring around Apartment 29.

When a good-for-nothing man named Dan is stabbed to death and his arm broken, Charlie Chan is on the case. His first clue comes from the victim's sister, who noticed a prowler wearing a glow-in-the-dark wristwatch.

Holmes and Watson match wits with an opera star intent on blackmailing a king.

Chaney plays two roles: mad scientist Arthur Lamb and Lamb's "experiment", known only as the Ape Man. This hideous creature was the result of Lamb's attempts to transplant animal glands into human beings.

A woman's cheating husband is murdered at their country estate, and suspicion immediately falls on her.