Best Mystery Movies of 1918

A young heiress of an American gun factory is threatened by a masked man after her father was murdered. This criminal might be a member of her family or a German agent, who wants to get information about the factory's products, perhaps his mystery has a combined solution - we will probably never know...

M'liss, a feisty young girl in a mining camp, falls for Charles Gray, the school teacher. Charles is implicated in a murder of which he is innocent, and the two must fight to save him from a lynching.

In this action-packed serial, government agent Quentin Locke infiltrates a corrupt patents company, only to run into the gleaming terror of its robot protector, the Automaton. In order to save the beautiful Eva Brent and find a cure for the dreaded Madagascar Madness, Locke suffers an inhuman array of tortures and physical restraints. He is chained, tied with barbed wire, padlocked in a crate and thrown in the water, tied beneath a descending elevator, strapped to an electric chair, and bound in an elaborate Oriental torture chamber.

A wealthy old man is murdered after deciding to write his nephew out of his will. Fearing that he will be accused of the murder his nephew takes flight but, with the help of a young woman whose life he saves, he has to try and track down the real murderer.

Detective Knick Garter and his sidekick Rheuma Tism are called for help by their friend, inventor I. Wanta Sneeze.

When retired merchant J. T. Manly is murdered, his son James, with whom he had quarreled, is arrested and finally convicted through the testimony of Manly's valet Aguinaldo. Shortly before James's execution, Sidney Holmes reveals to retired criminologist Martin Cross that on the night of the murder, he saw Aguinaldo commit the crime

Two men, one of them a villainous hypnotist, contend for the same woman, unaware that she suffers from dual personality disorder.

In the act of robbing a set of rare jewels from a museum, a robber is wounded in the hand. Prentice Tiller, while dressing a wound in his hand, overhears the woman in the next hotel room, Gertrude Temple, telephoning Aaron Molitor, to whom she is to deliver some jewels. Posing as Molitor, Prentice calls on Gertrude but disappears when Molitor, who also has been wounded in the hand, suddenly arrives. Molitor's men capture Prentice, who narrowly escapes death in the ruins of an old church and then continues to track Molitor.

Wealthy diamond collector Larry Hanrahan is given the opportunity to assist the beautiful, jewel-bedecked woman he admires in a Broadway café when she and her guardian are attacked by robbers. Larry is invited to visit the grateful pair, Col. Paul Gascoyne and his ward Adrienne, at the colonel's laboratory, where he is introduced to Wintermute, a chemist who produces imitation diamonds. In return, Larry asks them to view his priceless diamond collection. Although he has fallen in love with Adrienne, Larry is forced to believe that she is a thief when he is robbed by a woman wearing Adrienne's scarf. Larry finds his jewels in Gascoyne's house, but before he can escape, a group of thugs overpowers him. Adrienne assists him in contacting the police, who arrive in time to capture Gascoyne and his gang. Badly wounded, the colonel confesses that Adrienne has been his innocent dupe, whereupon Larry happily takes her to his heart.

Lois Fox, upon whose shoulder is branded a Chinese idiograph resembling the letters "A. Y.," is rescued from a gang of Chinese ruffians by Brice Ferris. His servant Ming, in attempting to steal from her finger a ring that bears a mysterious green seal, is killed, and soon afterward a stranger named Strang arrives, also in search of the girl. Despite Brice's efforts to protect her, Lois is abducted and taken to the headquarters of Lao Wing, the leader of a secret Chinese society known as the Tong.

During a party held in honor of his daughter Marion, Thomas Sterling announces that he will turn over his shipbuilding plant to the United States government for the duration of World War I. Sterling wants Marion to marry his partner, Hugo Smith, but she prefers Gordon Brett, who proposes to her after the party. Marion's father catches the two in an embrace and orders Gordon out of the house. Later that night, Sterling is found murdered. Gordon is the principal suspect, but Marion refuses to believe he is guilty and hides him in the house. Later she discovers Smith sending a message to the Germans on a wireless hidden in the attic.

While visiting Monte Carlo with her aunt, Rosalie Dean meets a young man, Maxfield Gray who is ready to kill himself because of his losses at the roulette wheel. She stops him from doing so, and lends him some money to win back what he's lost. He does, but they're only happy for a short while before Max is arrested for the murder of his ex-wife in the States.

A wealthy young criminologist Marcel Leviget is seen forcibly dragging his fellow clubman Dr. Rogers into a House of Ill Repute. In one of the back bedrooms of the bawdy house, an old friend of Marcel's, a prominent attorney, lies near death. Dr. Rogers is also acquainted with the dying attorney, and while Marcel's back is turned, Rogers discovers a distinctively designed hatpin embedded in the patient's heart.