Paul Decker murders his wife in her Italian villa by drugging her milk and asphyxiating her by gas. He cleverly locks the bedroom from the inside and hides inside a trapdoor in the floor until after the body is discovered by servants. He uses a scuba snorkel connected to tubes on the outside to breathe during the ordeal. Decker's stepdaughter Candy suspects him immediately, especially since no suicide note was found. She also is convinced that he murdered her father years before, but her accusations fall on deaf ears. The ruthless Decker even poisons the family spaniel when the pet takes too great an interest in the mask and realizes he will ultimately have to get rid of Candy too.

In London, twenty-two year-old Peggy Heller (Judy Geeson) meets and marries school teacher Robert Heller (Ralph Bates) after recovering from a nervous breakdown. Robert works in the countryside in a private school owned by headmaster Michael Carmichael (Peter Cushing), who is married to Molly Carmichael (Dame Joan Collins). On the eve of moving to the country with her husband, Peggy spends the night at the boarding house of Mrs. Beamish (Gillian Lind) and is attacked by a man with a mechanical arm in her room. Mrs. Beamish calls the doctor, but they do not believe Peggy. The next morning, she heads with Robert to the country and moves into the cottage in the school. Soon, Peggy is attacked by the same man, but Robert does not believe her. Then she meets the Headmaster and realizes that he has a mechanical arm. What will happen next?

Three married couples are forced to spend the night in a Victorian-era house where they start getting killed off by a deranged psycho who's bent on claiming an inheritance they are all entitled to.

Martin Durnley (Hywel Bennett) is a troubled young man. With a mother who insists on treating him like a child, a stepfather who can't wait to see the back of him, and a brother with Down's Syndrome shut away in an institution, is it any wonder he retreats into an alternate personality - that of six-year-old Georgie? It is Georgie who befriends Susan Harper (Hayley Mi...Read all

A centenarian artist and scientist in 1890 Paris maintains his youth and health by periodically replacing a gland with that of a living person.

A former Priest named Dr. Lawrence harbors a dark and horrible secret in his attic. The locked room serves as a prison cell for his crazed, cannibalistic adult son, who acquired his savage tastes in India during his father's missionary work there. Lawrence fears that his son will escape to prey upon the effete guests at his rural English estate during a cross-country auto race.

Soldiers in a rural English town are being brutally murdered by an unknown creature. Two sisters living nearby realize they might understand what's happening.

A frustrated thriller writer wants accurate crimes for his next book so he hypnotizes his assistant to make him commit the required crimes.

Count Yorga continues to prey on the local community while living by a nearby orphanage. He also intends to take a new wife, while feeding his bevy of female vampires.

An ambassador's wife discovers that one of the men in her life - either her husband, an ex-lover or her current lover - may be a vicious serial killer.

An obsessed pathologist discovers and captures a parasitic creature that grows when fear grips its host.

Marine atomic tests cause changes in the ocean's ecosystem resulting in dangerous blobs of radiation and the resurrection of a dormant dinosaur that threatens London.

A researcher investigating a notorious serial killer who was hanged 20 years earlier seemingly becomes possessed by the long dead strangler.

Wilbur Gray, a horror writer, has stumbled upon a terrible secret, that cats are supernatural creatures who really call the shots. In a desperate attempt to get others to believe him, Wilbur spews three tales of feline horror.

In 17th-century Hungary, elderly widow Countess Elisabeth Nádasdy maintains her misleading youthful appearance by bathing in the blood of virgins regularly supplied to her by faithful servant Captain Dobi.

Valentina, a beautiful fashion model, takes an experimental drug as part of a scientific experiment. While influenced by the drug, Valentina has a vision of a young woman being brutally murdered with a viciously spiked glove. It turns out that a woman was killed in exactly the same way not long ago and soon Valentina finds herself stalked by the same killer...

A woman searches for her missing lover, a psychiatrist who has suddenly vanished for no apparent reason. She ends up at a villa populated by a group of eccentric individuals. A string of murders commence immediately.