The Sinful Nuns of Saint Valentine (1974)

Puglia, southern Italy, around 1400. A convent is invaded by the Tarantula cult, whose fanatical and crazed members desecrate the sacred place by committing obscene and bloody acts.

A group of travelers are forced to seek shelter inside an abandoned jail where a notorious nun named Sister Monday had once been assigned and was suspected of murdering prisoners.

An American nun embarks on a new journey when she joins a remote convent in the Italian countryside. However, her warm welcome quickly turns into a living nightmare when she discovers her new home harbours a sinister secret and unspeakable horrors.

An Italian nobleman seeks help after his paralyzed daughter becomes possessed by the spirit of a malevolent ancestress.

A priest with a dark past and a novice nearing her final vows are sent by the Vatican to Romania to investigate a nun's death and face a demonic force.

An orphaned girl is rescued from a satanic ritual and taken to Saint Catherine Institute for homeless youth. There she will learn new skills while facing demons that stalk her.

In the aftermath of the Great Plague and amidst the subsequent witch-hunts against women, a young widow grapples with the tragic death of her husband in a society completely consumed by fear and death. Because she rejects the advances of her landlord, she is falsely accused of being a witch and thrown in jail for a crime she didn’t commit. She must endure physical persecution at the hands of England’s most ruthless witch-hunter and face her own inner demons as the devil himself starts to work his way into her mind.

In 1956 France, a priest is violently murdered, and Sister Irene begins to investigate. She once again comes face-to-face with a powerful evil.

As a top student at St. Adeline's Catholic Boarding School, Zoe senses that something is not quite right about the school's new nun-- a sense proven to be true when it is revealed the "good' nun is an imposter with a fatal attraction to Zoe's brother.

A young man returns from Rome to his sister's satanic New York apartment house.