The East Side Kids try to fix up a house for newlyweds, but find the place next door "haunted" by mysterious men.
An 1840s British surgeon, experiments with anesthetic gases in an effort to make surgery pain-free. While doing so, his demonstration before a panel of his peers ends in a horrific mishap with his patient awakening under the knife; he is forced to leave his position in disgrace. To complicate matters, he becomes addicted to the gases and gets involved with a gang of criminals, led by Black Ben and his henchman Resurrection Joe.
It is prior to the commencement of World War II, and Japan's fiendish Black Dragon Society is hatching an evil plot with the Nazis. They instruct a brilliant scientist, Dr. Melcher, to travel to Japan on a secret mission. There he operates on six Japanese conspirators, transforming them to resemble six American leaders. The actual leaders are murdered and replaced with their likeness.
A researcher investigating a notorious serial killer who was hanged 20 years earlier seemingly becomes possessed by the long dead strangler.
A group of delinquents on their way to summer camp get stuck in a haunted house.
A woman seeks to avenge her father's death using a local dancer, with long poisonous fingernails, to do her bidding.
Police try to track down a hooded serial killer who murders his victims with a combination of acid and poison gas
The town's leading citizen is a man victim of homicidal impulses beyond his control. He is being controlled by his wife who had left him for another man. She was involved in a car accident that has left her brain damaged and is kept in the basement, in secret, by Kessler's gardener.
A mad doctor (Bela Lugosi) and his helpers (John Carradine, George Zucco) lure girls to his lab for brain work, to help his wife.
Five people have stolen a priceless, legendary emerald from a religious temple. One of them is slain by an unknown killer.
A crazed teacher at a respectable girls' school draws power from a medallion she has obtained from the Carpathian Mountains, and uses it to experiment telepathically on the school's newest young pupil.
A writer of murder mysteries finds himself caught up in a string of murders in London.
A seemingly charitable soup kitchen operator (who moonlights as a criminology professor) uses his Bowery mission as a front for his criminal gang. Police attempt to close in on the gang as they commit a series of robberies, murders and bizarre experiments on corpses.
A woman seeks to avenge her father's death using a local dancer, with long poisonous fingernails, to do her bidding.
Police try to track down a hooded serial killer who murders his victims with a combination of acid and poison gas
Five people have stolen a priceless, legendary emerald from a religious temple. One of them is slain by an unknown killer.
A disfigured killer with glazed-over white eyes is doing the dirty work so that an insurance agent-doctor can get the victims' insurance money.
A group of hooded vigilantes hang wrong-doers with a rope stolen from Scotland Yard's Black Museum.
A group of delinquents on their way to summer camp get stuck in a haunted house.
The town's leading citizen is a man victim of homicidal impulses beyond his control. He is being controlled by his wife who had left him for another man. She was involved in a car accident that has left her brain damaged and is kept in the basement, in secret, by Kessler's gardener.
When master monster make-up man Pete Dumond is fired by the new bosses of American International studios, he uses his creations to exact revenge.
Two psychics place a prostitute under hypnosis in order to learn about her past-life experiences. When they unwittingly send her back in time, she finds herself in the Middle Ages, suspected of being a witch and on the verge of being executed.
Women are being tortured to death with various torture devices in the dungeon of an old castle by a deformed, hooded, holocaust survivor.
Two teachers, man-hungry Doris and restrained Marian, visit the Yorkshire moors a year after friend Evelyn disappeared there. On a stormy night, they take refuge in the isolated cottage of Stephen, one-time pianist shell-shocked in the Spanish Civil War. Doris flees as soon as the flood subsides; but Marian's suspicions about Evelyn's fate, in conflict with her growing love for Stephen, prompt her to stay on among the misty bogs.
Police try to track down a hooded serial killer who murders his victims with a combination of acid and poison gas
Jonathan Drake, while attending his brother's funeral, is shocked to find the head of the deceased is missing. When his brother's skull shows up later in a locked cabinet, Drake realizes an ancient curse placed upon his grandfather by a tribe of South American Jivaro Indians is still in effect and that he himself is the probable next victim.
A mad scientist transforms a panther into a man-like creature that escapes and goes on a murderous rampage.
When Dr. Von Altermann's wife Lila dies mysteriously at his spooky mansion, her relations suspect murder. They little suspect he's turning her into a zombie, to join the army of living dead he hopes to devote to the Nazi cause. Lila, though dead, has developed a will of her own. Meanwhile, Lila's brother Scott and his friends are increasingly alarmed by the eerie events.
When publisher William Marshall learns his young ward Melissa Collins has committed suicide, he sets in motion a plan to murder the man who drove Melissa to kill herself. Mistakenly believing that singer Larry Shaw is his intended target, Marshall unwittingly seeks help from the man who actually broke Melissa's heart.
A hooded serial killer finds a novel way to murder his victims--he lashes them to death with a whip. The police try to track him down before any more murders occur.
A woman is kidnapped and her identity is stolen by criminals attempting to collect her inheritance.
A woman falls under the hypnotic spell of a resurrected madman.
John Carradine narrates five horror tales, each with a comically predictable surprise ending. In the first, "The Witches Clock," the Farrells have purchased an old mansion in Salem Massachusetts and are warned by the town doctor of the history of witches in the community. The second story, "King of the Vampires," deals with a slight-figured killer called the King of the Vampires by Scotland Yard. The third, "Monster Raid," is about a man turned zombie when he ODs on his experimental drug. "Spark of Life" deals with a doctor Mendell obsessed with the experiments of a thrown-out professor named Erich von Frankenstein. "Count Alucard" is a variation on the Dracula story, with the Count acquiring the deed to Carfax Abbey from Harker as vampiresses and dead bodies start turning up.
A disparate group of individuals takes refuge in an abandoned house when corpses begin to leave the graveyard in search of fresh human bodies to devour. The pragmatic Ben does his best to control the situation, but when the murderous zombies surround the house, the other survivors begin to panic.
A young sailor falls in love with a mysterious woman performing as a mermaid on the local pier. As they become entwined, he comes to suspect the woman might be a real mermaid who lures men to a watery death during the full moon.
A young woman discovers she is the daughter of the infamous Dr. Jekyll, and begins to believe that she may also have a split personality, one of whom is a ruthless killer.
The head of a major cosmetics company experiments on herself with a youth formula made from royal jelly extracted from wasps, but the formula's side effects have deadly consequences.