Killers by Nature (2005)

Maimed by bullies at a California high school, a new student engineers acts of revenge.

On Halloween night, a sorority house is overrun with ghosts, while a vengeful housemother goes on a killing spree.

Several years after the murderous events of the first movie left her father dead, Emma is now living with her aunt Angela and navigating high school. Angela’s husband begins to suspect that Emma may not be as innocent as she appears and suggests sending her off to boarding school. Meanwhile, a new girl at school seems to know Emma’s secrets, leaving Emma no choice but to slip back to her old ways and take care of her enemies by any means necessary.

A group of teachers must defend themselves from a gang of murderous kids when their school comes under siege after hours.

In medieval England, Anne and her domineering mother-in-law Morwen struggle to survive on the outskirts of society. But when a man from Anne's past returns from war, a curse begins to take shape through a mysterious knight and threatens to destroy them all.

A timid and socially alienated 17-year-old high school student's life is turned upside down when she switches places with her sinister mirror image.

On Kate's 21st birthday camping trip, her friends encounter Piglet, a monstrous human-pig hybrid who brutally murders one of them. They uncover Piglet's origins and Kate must confront her past to survive the relentless killer.

Bobby tries to save himself and his best friend when they are kidnapped on their way home from school.

Mikey just needs a good stable home. He's bounced from foster home to foster home his whole life. He finally lands himself with a new loving family, but their perfect little child is not what he appears to be. His previous caretakers all died of mysterious "accidents" that weren't really accidents at all. Mikey is a cold blooded killer, and it doesn't take long for him to aim his sights on his new adoptive family and anyone else who stands in his way.

A woman wakes up injured in a basement surrounded by corpses. To survive, she pretends to be dead while a grotesque ritual unfolds in the house above.