Pattern of Evil (1971)

Living in rural Texas is a dysfunctional family: an abusive dad, a Vietnam vet with a war wound that's left him impotent; a compliant wife and a son of about 20, two small sons who look a lot like their brother. The dad harbors a secret, and he goes to murderous lengths to keep it hidden. The young man, Jimmy, who has suspicions, but little comes out until a Yankee woman comes to town.

In 1840s London, Dr. Thomas Bolton [Boris Karloff] dares to dream the unthinkable: experimenting with anesthesia gases to make surgery pain-free. While doing so, his demonstration before a panel of his peers ends in a horrific mishap with his patient awakening under the knife; he is forced to leave his position in disgrace. To complicate matters, he becomes addicted to his own chemical experiments and gets involved with a criminal gang led by Black Ben [Francis de Wolff], and a ruthless killer Resurrection Joe [Christopher Lee]. Unfortunately, this shady partnership leads Dr. Bolton to further ruin, culminating in his unwitting participation in murder — for which he becomes the first victim of a blackmail scheme.

Frost is arrested and committed for murder after he is apprehended burying his victims in the garden. However, even while under psychiatric care and tight hospital security, it becomes obvious that Mr. Frost is not all he seems to be.

After a traumatic brain injury triggers terrifying visions of extraterrestrials and a newfound talent for drawing, a father-to-be begins to question his reality and becomes obsessed with the need to protect his family from an unseen threat.

Nothing is what it seems when a twisted one-night stand spirals into a serial killer’s vicious murder spree.

After being bitten by a lethal snake, a young woman experiences changes in her senses and appearance, as she sheds her old self and slowly turns into a deadly weapon.

A troubled young woman becomes obsessed with her mysterious new neighbor, who bears a striking resemblance to the girl's dead mother.

After thugs brutalize a deaf-mute woman, the spirit of an Apache warrior takes over her lifeless body and sets out on a bloodthirsty quest for revenge.

When troubled teen Milo, who has a fascination with vampire lore, meets the equally alienated Sophie, the two form a bond that begins to blur Milo's fantasy into reality.

When motocross and heavy metal obsessed, 13-year-old Jacob's delinquent behavior forces CPS to place his little brother Wes with his aunt, Jacob and his emotionally absent father must finally take responsibility for their actions and each other in order to bring Wes home.