The Mystery of Lake Lethe (1917)
The Mystery of Lake Lethe was a murky crime short.
The Mystery of Lake Lethe was a murky crime short.
Webster Campbell
William Duncan
Corinne Griffith
Anne Schaefer
Nell ShipmanIn Dijon, Inspector Hanaud investigates Betty Harlowe after her uncle, Boris Waberski, accuses her of poisoning her wealthy aunt for an inheritance. While an initial autopsy finds nothing, Hanaud discovers the use of Strophanthus Hispidus—a rare, undetectable poison applied via an antique arrow. Amidst a flurry of "poison pen" letters and deception, Hanaud proves the murder occurred despite the lack of conventional medical evidence.
A man assists a woman to dispose of the body of her stepfather....
The Callbox Mystery (1932) is a British quota quickie crime film about a detective investigating murders linked to a mysterious callbox, likely involving suspects from a will, with a newspaper woman assisting and uncovering deeper secrets behind the apparent financial motives.

A woman's cheating husband is murdered at their country estate, and suspicion immediately falls on her.
This silent mystery is considered a lost film.
Bored by her hardworking husband, Tess goes to an illegal gambling den with a former suitor, Arthur Sinclair. The den is robbed and subsequently raided by police. Tess loses her rings and lies to her husband about her whereabouts. Her lies are exposed when the rings are found by the police. While trying to manage the fallout, she writes a compromising letter that is intercepted and used to blackmail her for $15,000. After being embroiled in further dangerous, fraudulent activity, her innocence regarding the robbery and associated crimes is established through the confession of a criminal named Peter Vanetti.
A rousing fusion of satire, mystery and action. Aristrocrat Ambrose Applejohn is aching for excitement. He gets more than he bargained for when two Russian thieves, Anna Valeska and her partner Borolsky, arrive at the mansion one dark night.
A doctor who cannot figure out what is wrong with his patient refers him to a detective, whom he hopes will be able to discern the cause of his mysterious illness.

Holmes goes on the trail of a Rembrandt painting, stolen by a drug-addicted artist.
After finding her sister dead, Maria tries to find out who or what is to blame.
After coming under suspicion for a computer technician's murder, six hackers team up to try to find the real killer.
After Outlaw Slippery Joe robs a miner and his daughter, a sheriff pursues him. While on the outlaw’s trail, the sheriff finds the miner's horse, abandoned by the outlaw, and notices the resemblance between Slippery Joe and Mr. Bond, a man he had encountered earlier who was searching for his twin brother. The miner and his daughter arrive at the ranger's cabin, recognizing Bond as the robber.
Mystery film in the detective Stuart Webbs series.
A multimillionaire is murdered, and his will leaves all his money to a beautiful young blonde. The murdered man's son thinks something is fishy, and a homicide cop sets out to find out who was behind the man's death. Complications ensue.

On the advice of his friend Pendleton, Ashton Kirk, a scholar and amateur detective, pays a visit to a house whose occupants, Charles Cramp and his sister Grace, complain of strange happenings involving Mexicans. Discussions with Ashton's agent in Mexico reveal that Cramp's father was once an engraver, who, in desperate need of cash, had agreed to supply Alva, a notorious thief, with forged currency plates. After a change of heart, Cramp refused to deliver the plates to Alva, and now Cramp's aunt, Miss Hohenlo, has come to her brother's home to find them herself. The clever Ashton realizes that the Mexicans are cohorts of Alva's and eventually uncovers an elaborate signalling and tunnel system used by Miss Hohenlo and Alva to locate the missing plates. Deciphering a message announcing the time and place of the arrival of the Mexicans, Ashton and his aides hide themselves in the house cellar, capture the thieves and destroy the plates.

The abandoned Balfour House, the owner of which was found dead five years earlier, comes back to life with the arrival of two suspicious sinister-looking tenants. This film was lost in the 1965 MGM vault fire; only a few stills exist.

A condemned man uses hypnotism on a judge. After the man's death, the judge finds himself acting like the condemned man.

12 part silent serial- 1. The Castle of Fear 2. The Spider's Web 3. The Vanishing Heiress 4. The Room Without a Door 5. Shots in the Dark 6. Ambushed 7. The Secret of the Coin 8. Into the Web 9. The Baited Trap 10. The Lady in White 11. The Closing Web 12. The Final Reckoning. A prequel to The Ace of Scotland Yard.
Sonya, a Marseilles Cafe performer involved with a pack of thieves is rescued from her criminal life by a police official who sends her lover and partner in a knife-throwing act to jail and then tries to seduce her. Not submitting to the official's advances, she falls in love with an Apache dancer in Paris and works with him, holding her other admirer at a distance. The official is mysteriously killed, presumably by her lover, it then falls to Sonya to find the real felon.
Harry Larrabee, a young playwright, lives in the same studio apartment house with Carolyn Vaughn, a painter of miniatures, with whom he falls in love. "The Wolf," a famous criminal, supposed to be dead, returns and communicates with his wife, a friend of Carolyn's. He forces his wife and her brother to aid him in a plot to rob Carolyn of her valuable jewels. Harry, by one of his famous "inspirations," discovers that a crime is being committed, rescues Carolyn and bears her away in a taxicab. He is himself suspected of the crime, but, undisturbed by the web of circumstance by which he is entangled, his wonderful inspirations give him the key to the conspiracy which led up to the crime. In an unusual and powerful finale the guilty parties fight among themselves and justice triumphs in an exciting climax.