When foreman Frank (James Karen) shows new employee Freddy (Thom Mathews) a secret military experiment in a supply warehouse, the two klutzes accidentally release a gas that reanimates corpses into flesh-eating zombies. As the epidemic spreads throughout Louisville, Ky., and the creatures satisfy their hunger in gory and outlandish ways, Frank and Freddy fight to survive with the help of their boss (Clu Gulager) and a mysterious mortician (Don Calfa).

After a man with extraordinary—and frighteningly destructive—telepathic abilities is nabbed by agents from a mysterious rogue corporation, he discovers he is far from the only possessor of such strange powers, and that some of the other “scanners” have their minds set on world domination, while others are trying to stop them.

Respected scientist and psychology professor Edward Jessup (William Hurt) decides to combine his experiments in sensory deprivation tanks with powerful hallucinogenic drugs, convinced that it may help him unlock different states of consciousness. The experiments are a success at first, but as Jessup continues his work, he begins to experience altered mental and also physical states. As he spends more time in sensory deprivation, his grip on reality begins to slip away.

Living on an estate on the shores of Lake Geneva, Lord Byron is visited by Percy and Mary Shelley. Together with Byron's lover Claire Clairmont, and aided by hallucinogenic substances, they devise an evening of ghoulish tales. However, when confronted by horrors, ostensibly of their own creation, it becomes difficult to tell apparition from reality.

On a farm owned by Eve Trent and her sister Mary, young archaeologist Angus Flint discovers a large and inexplicable skull, which he soon deduces belonged to the D'Ampton Worm, a mythical beast supposedly slain generations ago by the ancestor of the current Lord D'Ampton. The predatory Lady Sylvia Marsh soon takes an interest in both Flint and the virginal Eve, hinting that the vicious D'Ampton Worm may still live.

A group of teenage camp counselors attempt to re-open an abandoned summer camp with a tragic past, but they are stalked by a mysterious, relentless killer.

Jodie Foster stars as Clarice Starling, a top student at the FBI's training academy. Jack Crawford (Scott Glenn) wants Clarice to interview Dr. Hannibal Lecter (Anthony Hopkins), a brilliant psychiatrist who is also a violent psychopath, serving life behind bars for various acts of murder and cannibalism. Crawford believes that Lecter may have insight into a case and that Starling, as an attractive young woman, may be just the bait to draw him out.