At a small East Coast beach town, a boat dumps radioactive toxic waste into the ocean, which lands on a sunken ship and the skeletons of shipwrecked dead sailors. The skeletons and water plants are mutated by the waste, transforming into half-human, half-fish monsters that makes their way to the surface.
Jerry (Steckler as "Flagg"), his girlfriend Angela (Sharon Walsh), and his buddy Harold (Atlas King) head out for a day at the carnival. In one venue, a dance number is performed by Marge (Carolyn Brandt), an alcoholic who drinks before and between shows, and her partner, Bill Ward, for a small audience. There Jerry sees stripper Carmelita (Erina Enyo) who hypnotizes him with her icy stare and he is compelled to see her act. Carmelita is the young sister of powerful fortune-teller Estrella (Brett O'Hara), and Estrella turns Jerry into a zombie by hypnotizing him with a spiraling wheel. He then goes on a rampage, killing Marge and fatally wounding Bill. Later, Jerry attempts to strangle his girlfriend Angela as well. It develops that Estrella, with her henchman Ortega (Jack Brady), has been busy turning various patrons into zombies, apparently by throwing acid on their faces.
In the year 1968, every day is the same for Dr. Robert Morgan (Price): he wakes up, gathers his weapons, and then goes hunting for vampires. Morgan lives in a world where everyone else has been infected by a plague that has turned them into undead, vampiric creatures that cannot stand sunlight, fear mirrors, and are repelled by garlic. They would kill Morgan if they could, but fortunately, they are weak and unintelligent. At night, Morgan locks himself inside his house; during the day, he kills as many vampires as he can, burning the bodies.
Le docteur Conrad Fisherman se rend au chevet de son confrère Orloff afin d’obtenir des informations capitales sur ses propres recherches. Agonisant, Orloff lui livre des documents qui lui permettront de prendre le pouvoir à distance sur un être inanimé ou inerte grâce aux ultra-sons. Grâce à lui, Jekyll réussit à redonner vie à son frère mort, Andros, qu'il a lui-même assassiné. Réfugié dans le dernier étage de son manoir, Jekyll manipule Andros, désormais mort-vivant, et l'oblige à tuer ses maîtresses, des danseuses de cabaret sur lesquelles il reporte ses échecs scientifiques.
The story surrounds four men who are cursed by a voodoo priest for stealing a sacred idol from his temple. Soon after evil 'doll' people begin to kill their family members.
The film is set in New Orleans, Louisiana. A young woman's cousin has recently been married and being the sole surviving male, sets to claim the family's plantation. Unwilling to give up what she believes to be hers, she uses voodoo to resurrect her dead brother (referred to as "The Dead One") to kill her enemies.
Peter Blood (Kieron Moore) is a young doctor who experiments with bringing the dead back to life. His early subject is the deceased husband of Linda Parker (Hazel Court), a woman he is attracted to. Hidden in a Cornish tin mine, he conducts his ghastly experiments using curare to remove living, beating hearts from undeserving people in order to bring the deserving dead back to life.
Former U. S. Army major, Paul Krenner (James Griffith), plans to conquer the world with an army of invisible soldiers and will do anything to achieve that goal. With the help of his hired muscle, Julian (Red Morgan), Krenner forces Dr. Peter Ulof (Ivan Trisault) to perfect the invisibility machine Ulof invented. He keeps Ulof’s daughter, Maria (Carmel Daniel) imprisoned to keep Ulof in line.
The basic plot involves the police investigating a supposed haunted house. The house is discovered to serve as headquarters for a confidence trickster who pretends to be able to contact the dead, and charges naive customers large amounts of money to allow them to speak to their deceased loved ones.
At the funeral of an Old Man's wife, mourners are gathered by an open grave, among them her husband (Bela Lugosi). Overhead, an airliner is heading towards Burbank, California. The pilot Jeff Trent (Gregory Walcott) and his co-pilot Danny (David De Mering) are blinded by a bright light and loud sound. They look outside and see a flying saucer. The pilots follow the saucer's flight until it lands at the graveyard, where the funeral's gravediggers are killed by a female zombie (Maila Nurmi).
Dr. Karol Noymann, an atomic scientist, is killed in a laboratory explosion. His colleague, Dr. Adam Penner, is disturbed by the accident and resigns his position and calls for changes.
Robert Kraft (Richard Boone) is the newly appointed chairman of a committee that oversees a large cemetery. The cemetery caretaker, Andy MacKee (Theodore Bikel), keeps a map in the cemetery office displaying the grounds and each grave site. Filled graves are marked by black pins and unoccupied but sold graves are marked with white pins. New to the position and unobservant, Kraft accidentally places a pair of black pins where they don't belong, only to discover later that the young couple who had bought the grave sites in question died in an automobile accident soon afterwards. He believes that he marked them for death.
Un riche industriel engage un réputé trouveur de canulars, Philip Knight, afin de prouver que l'ile qu'il vient d'acquérir et qu'il prévoit développer n'est pas hantée par le voodoo. Toutefois, en arrivant sur l'ile, Knight réalise rapidement que le voodoo est bien présent sur l'ile lorsqu'il trouve une plante géante mangeuse d'hommes et une tribu indigènes aux pouvoirs étranges.