A serial killer unleashes his blood lust at a remote environmental-camp. Years later a horror novelist relocates to rural England and is plagued to the point of madness by horrific hauntings of a massacre.
A woman recovering from a nervous breakdown tries to convince her husband and and the local London police that she has witnessed a murder in the abandoned house next door.
All hell breaks loose when a giant grizzly, reacting to the slaughter of her cubs by poachers, attacks a massive rock concert in the National Park. [This sequel to "Grizzly" (1976) was left unfinished after production wrapped prematurely in 1983, and was not officially released until 2020, though a bootleg workprint version had been in circulation for some years prior to this.]
A small town, desperate to recover from hard economic times, is under threat when voracious Snakehead fish mutate and survive previous lake chemical poisonings. The fish transform from pests to predators when human growth hormones are dumped into the local lake in the hopes of reviving the local fishing industry. Thriving on the hormones, the Snakehead fish grow to monstrous proportions, devouring everything within reach. Capable of moving and eating on land, they are forced to leave the now barren lake in a desperate search for food - animal, vegetable or human.
A group of college students take a Halloween hayride in the countryside and convince the driver to take them to a secluded area for a night of debauchery. However, the fun turns to terror when a local farmhand unearths a mysterious wooden box that contains an ancient zombie.
A group of friends travel to a cabin in the Norwegian forest. It's a rumour that at night a crazy man can be heard screaming at a lake nearby the cabin.
Murders, with victims dying from spines broken by brute strength, erupt in the city and the killers, when encountered, walk away unharmed by police bullets which strike them. A police doctor's investigation of the deaths leads to the discovery of an army of dead criminal musclemen restored to life, remotely controlled by a vengeful former crime boss and a former Nazi scientist, from the latter's laboratory hidden in the suburbs.
Chloe Keane is an stressed American fashion model living in London who is about to have the worst weekend of her life. She and her boyfriend are invited to attend a party at the house of a former rock-star named Stan and his weird family who live in the countryside. Chloe awakes the next morning only to find her boyfriend has abandoned her at Stan's house and she has been drugged and handcuffed to the bed.
In the center of a monotonous suburban existence, Sarah lives silently and in subservience to her icy husband Patrick. They have been together far too long, and Patrick's affections for his wife have all but vanished. Instead, his sexual urges are tempting him to lust after their own son. Realizing how far gone her husband is, Sarah undertakes drastic, shockingly sickening measures to salvage some sense of her life and purge her years of festering resentment.
From deep within the tomb of the Egyptian pharaoh Tutankhamun, Professor Douglas McCadden ships the coffin of Ankh-Vanharis to the California Institute of Sciences where X-rays reveal five diamond-like crystals hidden within the coffin. Technician Peter Sharpe steals the crystals but doesn't notice that the powerful X-ray has revived a green fungus. When the coffin is opened at a university press conference, the reporters uncover more than they bargained for. The mummy has disappeared... and the Time Walker is alive again!
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.
A young doctor kills himself after a medical committee terminates his research into human embryos, considering it too inhumane. His wife then seeks revenge on those who drove her husband to his death by luring each member of the committee into compromising situations and then killing them one by one.