A scientist working on cures for rare afflictions, such as a bone softening agent made from molds to allow him to correct the spinal deformity of his nurse, finds the physical causes of lycanthropy in wolf-man Larry Talbot and of vampirism in Count Dracula, but himself becomes afflicted with homicidal madness while exchanging blood with Dracula.
Frankenstein, a young medical student, trying to create the perfect human being, instead creates a misshapen monster. Made ill by what he has done, Frankenstein is comforted by his fiancée; but on his wedding night he is visited by the monster.
After experimenting on himself and becoming invisible, scientist Jack Griffin, now aggressive due to the drug's effects, seeks a way to reverse the experiment at any cost.
After his brother's death, Larry Talbot returns home to his father and the family estate. Events soon take a turn for the worse when Larry is bitten by a werewolf.
Dracula, Werewolf, and the Invisible Man must work together to stop Dr. Frankenstein from creating an unstoppable monster.
When Dr Frankenstein decides to retire from the monster-making business, he calls an international roster of monsters to a creepy convention to elect his successor. Everyone is there including Dracula, The Werewolf, The Creature, Dr Jekyll & Mr Hyde and many more. But Frankenstein's title is not all that is at stake. The famous doctor has also discovered the secret of total destruction that must not fall into the wrong hands!
An ancient Egyptian priest named Imhotep is revived when a British archaeological expedition finds his mummy and one of the researchers accidentally reads an ancient life-giving spell. Imhotep escapes from the field site and searches for the reincarnation of the soul of his lover.
Following a tragic accident that leaves him disfigured, crazed composer Erique Claudin transformed into a masked phantom who schemes to make beautiful young soprano Christine Dubois the star of the opera and wreak revenge on those who stole his music.
Dr. Victor Frankenstein, a brilliant but egotistical scientist, brings a creature to life in a monstrous experiment that ultimately leads to the undoing of both the creator and his tragic creation.
Famed monster slayer Gabriel Van Helsing is dispatched to Transylvania to assist the last of the Valerious bloodline in defeating Count Dracula. Anna Valerious reveals that Dracula has formed an unholy alliance with Dr. Frankenstein's monster and is hell-bent on exacting a centuries-old curse on her family.
Lawrence Talbot, an American man on a visit to Victorian London to make amends with his estranged father, gets bitten by a werewolf and, after a moonlight transformation, leaves him with a savage hunger for flesh.
In order to protect her family, a retired beauty queen turns to a life of crime.
A countess from Transylvania seeks a psychiatrist’s help to cure her vampiric cravings.
Though safely entombed in a crypt deep beneath the unforgiving desert, an ancient queen whose destiny was unjustly taken from her is awakened in our current day, bringing with her malevolence grown over millennia, and terrors that defy human comprehension.
The Wolf Man tries to warn a dimwitted porter that Dracula wants his brain for Frankenstein monster's body.
Frankenstein's unscrupulous colleague, Dr. Bohmer, plans to transplant Ygor's brain so he can rule the world using the monster's body, but the plan goes sour when he turns malevolent and goes on a rampage.
Blackmailing a young couple to assist with his horrific experiments the Baron, desperate for vital medical data, abducts a man from an insane asylum. On route the abductee dies and the Baron and his assistant transplant his brain into a corpse. The creature is tormented by a trapped soul in an alien shell and, after a visit to his wife who violently rejects his monstrous form, the creature wreaks his revenge on the perpetrator of his misery: Baron Frankenstein.
Grave robbers open the grave of the wolf man and awaken him. He doesn't like the idea of being immortal and killing people when the moon is full so tries to find Dr. Frankenstein, in the hopes that the doctor can cure him. Dr. Frankenstein has died; however, his monster is found.
One of the sons of late Dr. Henry Frankenstein finds his father's ghoulish creation in a coma and revives him, only to find out the monster is controlled by Ygor who is bent on revenge.
Baron Victor Frankenstein has discovered life's secret and unleashed a blood-curdling chain of events resulting from his creation: a cursed creature with a horrid face — and a tendency to kill.