Armchair Detective: Mystery at Malibu

In 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.

This silent mystery is considered a lost film.

A young girl in Monte Carlo is engaged to a nobleman, but is really in love with someone else. A jewel thief named "The Black Spider" has been robbing the wealthy of Monte Carlo, and as a joke the girl steals her aunt's jewels. Unfortunately, a detective finds out and suspects her of being the real "The Black Spider".

The American consul in Zanzibar is informed that a fugitive American has just reached the African coast, and becomes suspicious of a newly arrived man from Boston, Massachusetts.

Feature version of the 1945 American serial film of the same name, composed for export only, never seen in the USA and now evidently a long-lost film.

15 chapter mystery serial: [1] “The House of Secrets,” released 5 April 1915; [2] “The Face of Fear,” released 12 April 1915; [3] “The Silver Cup,” released 19 April 1915; [4] “The Ring of Death,” released 26 April 1915; [5] “No Other Way,” released 3 May 1915; [6] “The Strength of Love,” released 10 May 1915; [7] “Into the Night,” released 17 May 1915; [8] “In the Wolf’s Den,” released 24 May 1915; [9] “The Iron Hand of the Law,” released 31 May 1915; [10] “The Inspiring Sword,” released 7 June 1915; [11] “The Valley of the Shadow,” released 14 June 1915; [12] “The Sacrifice,” released 21 June 1915; [13] “The Man Who Did Not Die,” released 28 June 1915; [14] “A Story of the Past,” released 5 July 1915; [15] “The Coming of the Kingdom,” released 12 July 1915.

After Henry Dawson and Robert Harwell quarrel at Elaine Huntington's garden party, Henry disappears and Robert is accused of murder. Although Robert is found guilty and sentenced to death, Elaine, who loves him, believes he is innocent and does everything in her power to help him.

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.

When Harlan Carr inherited his Uncle Ebenezer's "Jack-O Lantern" house and too his bride there to live, he found himself the unwilling host of a score of hungry relatives within a week. Soon, strange things began to happen. A black cat made the house his headquarters, unexplained sounds could be heard and a shadowy figure floated through the halls at night.

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 barber who mistakenly believes he has killed a burglar and seeks shelter in the home of a manicurist.

Major Temple vainly tries to purchase of the priests the Green God he sees on a visit to China. He commissions Robert Ashton to get it for him, promising him the hand of his daughter in marriage.

After old Trowbridge is mysteriously murdered, his nephew, Kane Langdon, is accused of the crime. Trowbridge's adopted daughter Alice makes every effort to prove Kane's innocence, but to no avail. When Kane escapes from the clutches of the law, Alice works with him to investigate the crime. They soon discover that Judge Hoyt, a great friend of Trowbridge and an ardent admirer of Alice, killed Trowbridge after forging the old man's will to read that Alice would only inherit his fortune if she married the judge. The judge, confronted with the accusation, becomes so unnerved that he confesses to the crime, and all ends happily with Alice in Kane's arms.

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.

A film buff's obsession with an elusive, possibly nonexistent film spirals into a dangerous descent, blurring the line between reality and madness.

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 lost film.

Holmes goes on the trail of a Rembrandt painting, stolen by a drug-addicted artist.

Living quietly under the assumed name Paul Sernine, reformed gentleman crook Arsene Lupin is summoned to protect his invalid, wealthy friend Henry Forbes.

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