Dr. Leon Kravaal develops a potential cure for cancer, which involves freezing the patient. But an experiment goes awry when authorities believe Kravaal has killed a patient. Kravaal freezes the officials, along with himself. Years later, they are discovered and revived in hopes that Kravaal can indeed complete his cure. But human greed and weakness compound to disrupt the project.

A fugitive, dangerous madman reaches an English village where he confronts his former partner who left him for dead in the jungle after their discovery of a diamond mine. When the former partner also claims to have since lost the mine and all its wealth, which he took all for himself, and though the partner is still living in a state of luxury , the madman takes up an offer from a crazed scientist to make him invisible, something the scientist has already done with experimental animals, so that he can take revenge.

University professor George Kingsley is struck by gangsters while crossing the street, leaving him with brain damage and one of the gangsters, Cannon, paralyzed. Kingsley's friend Dr. Sovac attends to both men, and when Cannon offers him a reward for aiding his recovery, Kovac transplants part of Cannon's brain into the dying Kingsley's skull, creating a dual personality.

A 1925 film directed by Sidney Franklin.

A young girl, Rose Eastmen lives with her lazy Uncle, who works as a janitor in a publishing house. Lacking education, both Rose and her Uncle are susceptible to the socialist ideas of writer Rudolph Creig. One day Rose encounters Jack Steven's the wealthy son of the publishing house, working on his car. She believes he is a common laborer, and begins seeing him. Through her exposure to Jack, Rose begins to realize the rich are not such an abominable people. Rudolph has also reached this conclusion after learning Steven's has published his book. Now with a hefty royalty check and success, Rudolph is able to marry Rose.

Betsy Harlow is a hard-working maid in a boarding house. Her dream. however, is to be a detective, a dream she shares with her boyfriend Oscar, a delivery boy for a local grocer. One day a mysterious character named Harry Brent takes a room at the boarding house. Harry, seeing that Betsy is falling for his rather shady charms, persuades her to help him get a box of jewels owned by the Jaspers, an elderly couple who lives across the hall. It turns out that Harry is not quite who he seems; neither, however, are the Jaspers.

In 19th century England, a noted brain surgeon rescues a former student from being hanged on a false conviction for murder, and spirits him away to an ancient, repurposed abbey far in the countryside. There, he connives his pupil into assisting him in mapping the functions of the various parts of the human brain, using living subjects who are under a terrible animation-suspending drug called "black sleep". Subsequently, the student, along with the daughter of one of the subjects, discover that most of these subjects have survived but are being kept in a dungeon-like cellar, in various stages of physical and mental derangement...

Dr. Bonner plans to live forever through periodic gland transplants from younger, healthier human victims. Bonner looks about 40; he's really 104 years old. But people are starting to get suspicious, and he may not make 200.

The international criminal Helene Voigt, who calls herself Countess Montigno, is on the run from the law.

In a futuristic city sharply divided between the rich and the poor, the son of the city's mastermind meets a prophet who predicts the coming of a savior to mediate their differences.

Thomas Graal's a screenwriter, is very fond of his secretary Bessie. Overtaken by a kiss by Thomas she runs away. In his misfortune Thomas writes a screenplay inspired by Bessie. But she has not been really honest with him. 31 minutes of runtime are missing and presumed lost.

Dr. Bill Cortner and his fiancée, Jan Compton, are driving to his lab when they get into a horrible car accident. Compton is decapitated. But Cortner is not fazed by this seemingly insurmountable hurdle. His expertise is in transplants, and he is excited to perform the first head transplant. Keeping Compton's head alive in his lab, Cortner plans the groundbreaking yet unorthodox surgery. First, however, he needs a body.