To assist with his work due to his failing eyesight, renowned biologist Dr. Alexander Thorkel (Albert Dekker) invites two prominent scientists and a mineralogist to his hidden Amazon jungle laboratory. Thorkel remains evasive about the nature of his experiments, and after the team evaluates his bacteria slides, he orders them away. When they refuse, Thorkel and his servant trick them into a chamber where Thorkel shrinks them down to microscopic size, and they escape to the terrifying jungle.

A man from Manila, who deals in antiques, falls victim to an ancient Satanic curse, as a result of his wife joining a cult. To set things straight, he seeks help from a local historian.

Susan begins a search operation in a remote area of Mexico to locate her fiance Bruce. The team finds a gigantic one-eyed monster who became disfigured due to exposure to excess radioactivity.

When a captain arrives on an English coastal town to investigate reports of smuggling, he ends up with much more to deal with, including marsh phantoms and a suspicious vicar.

With its history of murder and suicide, the affluent Hammond family is seemingly cursed. When deaths on the British clan's estate draw the involvement of Scotland Yard, investigator Bob Curtis (James Ellison) arrives to look into the mysterious matter. Oliver Hammond (John Howard) and his sister, Helga (Heather Angel), are among the relatives who must contend their family's dark secret, which involves the legend of a werewolf. Can the macabre legacy of the Hammonds be stopped?

After surviving a traumatic car accident, a race car driver travels to the Cote D'Azur to recover. However, when is plagued by an urge to strangle his wife, he enlists the help of a suave local psychiatrist.

A number of swamp land men have died by strangulation and the inhabitants believe that an innocent man they hanged is seeking revenge on all of the male descendants of those responsible for his death. Maria, granddaughter of the innocent ferryman, decides to operate the ferry service. Chris Sanders, a son of one of the men who did the hanging, and Maria fall in love. The “strangler” seizes Chris and Maria offers her life if Chris is spared.

Newlyweds (Gerald Mohr, Cathy O'Donnell) visit her family mansion so she can confront and surmount childhood demons.

Emmanuel, a scientist, discovers skeletal remains of a humanoid and brings it to his home. However, with its ability to grow new flesh when moistened, the skeleton wreaks havoc in his house.

When his cattle begin to mysteriously disappear, rancher Jimmy Ryan looks for answers. He is soon horrified to learn that a giant dinosaur hiding in Hollow Mountain is eating his livestock.

Three archaeologists uncover the sarcophagus of Princess Ananka despite being warned of a curse. The situation regresses when one of them awakens Kharis, who was entombed alive to guard the princess.

Mad scientist Dr. Roger Girard (Bruce Dern) is experimenting with transplanting second heads onto farm animals. When an out-of-control maniac, Cass (Albert Cole), stumbles upon Girard's place, he kills the landlord, injures his dim-witted son, Danny (John Bloom), and seriously hurts himself, as well. Seizing the opportunity, Girard grafts Cass's head onto Danny's body in an effort to save them both. The experiment is successful, but the creation goes mad and wreaks havoc on the countryside.

A lonely child creates an imaginary playmate with surprisingly dangerous results.

Determined to develop a gaseous drug that allows patients to tolerate the difficulties of surgery, Dr. Bolton (Boris Karloff) devises numerous opium-based remedies, which he tests on himself. His experiments fail miserably in trials performed for his colleagues -- who include his own son, Jonathan (Francis Matthews) -- and Bolton is dismissed from his position. Having developed an addiction to opium, Bolton finds work treating the poor but falls in with grave robbers in order to get drugs.

When a white racist wakes up a head transplant, he learns that his head has been transplanted onto the body of a black convict.

Dr Jeffery Stewart and Dr Dan Forbes, two scientists, from the Office of Scientific Investigation must stop a creature that threatens to destroy Earth.

An Austrian general agrees to care for Marcilla, a countess's daughter, while her mother is away. However, Marcilla turns out to be a seductive and dangerous vampire.

A desperate young heiress is convinced that she's a werewolf responsible for a grizzly series of unsolved murders that have terrified the citizens of London and baffled Scotland Yard.

Voodoo brings back a hit-and-run victim (Jon-Miki Thor), with a baseball bat, for revenge on rapists and a police chief (Adam West).

Paul Carver, a tourist, stumbles upon a castle at night where he is treated like royalty by the wealthy woman who lives there. However, come morning, the castle and woman vanish, leaving him befuddled