Dr. John Beck, recently married, decides to take his wife, Cathy, spelunking in Carlsbad Cavern. While there, Dr. Beck, who specializes in bats, is bitten by a fruit bat. He is then, inexplicably, transformed into a vampire bat. While he escapes and seeks help from another doctor, it is clear the treatments are not working. In fact, they are aggravating his condition. Dr. Beck unwittingly goes on a killing spree, catching the attention of Sergeant Ward.
After being unknowingly inflicted with the bite of a werewolf while on a visit to Europe, White House press secretary Jack Whittier begins to turn into a deadly beast by night, terrorizing Washington D.C. and presenting a very deadly threat to the President.
A hunchback working in a morgue falls in love with a sick woman. He goes berserk when she dies and seeks help from a scientist to bring her back from the dead.
The legendary Loreley has been living for centuries in a grotto beneath the river Rhein in Germany. Every night when the moon is full, she turns into a reptile-like creature craving for human blood. When one girl after another of a nearby boarding school is killed by her, a hunter named Sigurd is engaged to kill the monster.
In Medieval France a warlock is beheaded and his wife is tortured and executed. Hundreds of years later, an isolated group of people discover his head buried on their property. Soon it comes back to life, possessing people and using them to commit sacrifices and to search for the rest of his body.
After receiving word about a mysterious carcass/skeleton unearthed in the Arizona desert, a father and his daughter decide to remove it from the burial grounds for further study. Once they do so, they, as well as the town, are besieged by a colony of gargoyles living in some nearby caverns.
When a government official disappears in the London tunnels, after several reports of missing people in the same location, Scotland Yard start to take the matter seriously, along with a couple who stumble into a victim by accident.
On the eve of her 17th birthday, Mari and friend Phyllis set off from her family home to attend a rock concert in the city. Attempting to score some drugs on the way, the pair run afoul of a group of vicious crooks, headed up by the sadistic Krug.
The eminent Dr. Phibes awakens from a decade of suspended animation and heads to Egypt with the corpse of his dead wife, which he intends to resurrect by murdering people in strange and heinous ways.
After a spate of murders, the villagers of Schtettel kill the depraved perpetrator, Count Mitterhouse. Fifteen years later the Circus of Nights appeared in the plague-ridden village and its performers include Mitterhouse's mistress, children and cousins. They have come to Schtettel to fulfil the Count's last words, an evil, vicious curse of death and destruction on those who participated in his impaling. The children of Schtettel become the targets for a brutal and devastating revenge as the Vampire Circus rehearses for its most deadly performance.
When a tourist group become lost within ancient catacombs, they meet the sinister Crypt Keeper, who tells them each their fate. The enigmatic figure's macabre stories involve a wife dabbling in murder, a retired sanitation worker targeted by his suspicious neighbors, and an adulterer who may face a fitting demise if the yarns come true.