Ellen receives an exotic mask by mistake and begins to have waking nightmares and hallucinations. Her husband and doctors believe she is a paranoid schizophrenic and take her to a psychiatric ward. On the way to the hospital the car breaks down, her husband rushes off to get gas, and the Nightmare Man appears. Ellen escapes and stumbles upon a country house where two young couples are spending the weekend. They do not know if the killer is real or just a figment of Ellen's tortured mind nor if the killer is outside or already inside the house.
The all female crew of the transport ship Muse is on a mission in deep space. They pick up an SOS signal and discover a derelict space cruiser where all the women have died mysteriously. They take the only survivor, a young woman named Flair, and detonate the ghost ship. However, the danger is just beginning. With Flair on the Muse, the romances between the women begin to take a new turn. One by one, the crewmembers are attacked by a mysterious alien presence, desperate to find a way to reproduce with human women!
At the Tromaville Institute of Technology's nuclear plant, Prof. Holt has perfected "subhumanoids": living beings without emotions who perform menial tasks. When school reporter Roger Smith meets a beautiful subhumanoid named Victoria, they fall in love and he becomes determined to save her and the school from a giant mutant squirrel, Tromie.
In England, a group of space scientists led by Bernard Quatermass, who have developed plans for the first Moon colony, learn that a secret, ostensibly government-run, complex of identical design has been built in a remote part of England and is the focus of periodic falls of small, hollow "meteorites" originating in outer space. Quatermass determines to investigate and uncovers a terrifying extraterrestrial life form which has already begun action to take over the Earth.
A lone female park ranger tries to track down a vicious creature killing various people and terrorizing her at a remote national park.
Radio personalities Larry Abbot and Vickie Pearle are stars of a mystery show. Since they announced their engagement, Larry has been plagued by speech problems and, seeking out an unconventional cure, he returns to his boyhood home, a mansion in the countryside, bringing Vickie along. Larry reunites with numerous family members, but discovers that there are sinister things afoot within the walls of the creepy estate.
When a rare species of butterfly is found in a mysterious valley in Japan, a pair of entomologists go to investigate and find more. They discover Varan, a giant monster, who decides to leave the valley and head straight for Tokyo.
Four successful elderly gentlemen, members of the Chowder Society, share a gruesome, 50-year-old secret. When one of Edward Wanderley's twin sons dies in a bizarre accident, the group begins to see a pattern of frightening events developing.
While witnessing a horrific paranormal occurrence inside an abandoned church, a military commando led by a ruthless colonel, discovers a digital tablet with video footage on it: co-workers filming their trip in the woods, connecting the hikers in the footage with the unbound evil inside the church.
A boy wakes up to find a note left on his door, warning him to complete a task. He begins to find strange things around him, and he feels like someone or something is watching him as he does.