Night of the Demon

The Bigfoot attacked the group primarily to protect its territory in the woods. However, after Bill dug up the infant skeleton from the cemetery, the creature's behavior became more aggressive and targeted, it was retrieving its dead offspring and retaliating against those who disturbed the grave. The attacks escalated from random encounters to a direct siege on Wanda's cabin.

Earlier, a hunter was attacked and impaled near the group's campsite, establishing the creature's violent territorial nature.

Wanda was raped by the Bigfoot as a teenager, resulting in a pregnancy. Her father, Emmet McGinty, witnessed the assault and believed the creature was a demon. Wanda gave birth to a mutant half-human child, which Emmet killed. This traumatic history explains why Wanda lived as a recluse in the woods and later participated in the cult rituals surrounding Bigfoot effigies.

The town lore about Emmet McGinty's deranged preaching and rumors of inbreeding foreshadowed the dark family secret.

Pete was attacked by the Bigfoot in a manner that caused him to turn his own rifle on himself. The creature manipulated him into shooting himself, likely through psychological terror or physical coercion, leaving Pete missing until his mutilated body was later hung on the cabin porch.

The earlier attack on Linda and Gary demonstrated the Bigfoot's ability to directly threaten and harm the group members.

After surviving the cabin massacre, Bill was found unconscious in the woods with his face burned. When he recounted the events, the Bigfoot attacks, the deaths of his students and Carla, the creature's actions, the police and hospital psychologists dismissed his story as delusional. With no physical evidence except the burned faces and no survivors to corroborate, authorities concluded he was insane rather than accept his account of a Bigfoot massacre.

Throughout the film, authorities consistently dismissed the Bigfoot theory as a hoax, aligning with their ultimate rejection of Bill's story.

Wanda burned her father in revenge for killing her newborn child. After Wanda gave birth to the half-human Bigfoot offspring, Emmet murdered the infant. In retaliation, Wanda set fire to Emmet's barn, staging his death as a suicide. This act of filicide and subsequent arson was Wanda's response to the trauma of losing her child to her own father.

Wanda's nervous breakdown when the Bigfoot was mentioned hinted at deep, unresolved trauma surrounding the creature.

The local sheriff was participating in a Satanic cult that worshipped the Bigfoot as a demonic entity. He was present during the ritual alongside Wanda and other cultists, gathered around a Bigfoot effigy. When Bill disrupted the ceremony by firing his gun, the sheriff fled with the other cultists, revealing widespread local involvement in the cult.

The town's dismissive attitude toward the Bigfoot killings may have been influenced by the sheriff's covert cult activities.

The Bigfoot retrieved its dead offspring's remains because the skeleton belonged to the creature's actual child. Bill's excavation of the grave triggered the creature to reclaim what remained of its offspring. This act directly led to the Bigfoot's intensified aggression and pursuit of the group, as taking the infant's bones represented a violation of its offspring's resting place.

The discovery of the skeletal remains confirmed Wanda's traumatic story and tied the creature directly to her.

Emmet attempted to induce an abortion because he believed the Bigfoot's child was a demon. After witnessing the creature rape his daughter, Emmet became convinced the pregnancy was demonic in nature. He forced Wanda to drink poison in an attempt to terminate what he considered an abomination, but the poisoning failed to kill the fetus.

Emmet's reputation as a deranged preacher who believed in demonic entities established his extreme religious convictions.

During the Bigfoot's attack on Wanda's cabin, the students were systematically killed: Gary was disemboweled, Roy had his head smashed through a window and his throat slit on the glass, and Linda was impaled with a pitchfork. Pete had already disappeared earlier after being attacked and forced to shoot himself. Only Bill survived, though he was left with severe burns on his face. Carla was also strangled to death during the massacre.

The earlier attacks on Linda, Gary, and Pete established the Bigfoot's escalating pattern of violence against the group.

Wanda displayed unnatural calm during the massacre because she had a complex psychological relationship with the creature. The Bigfoot was the father of her child, and despite the trauma of being raped by it, she had become involved in a cult that worshipped the creature as a demon. Her detachment likely stemmed from years of psychological trauma, her identification with the Bigfoot through her lost child, and her participation in the cult's worldview.

Wanda's willingness to participate in the Satanic ritual and her nervous breakdown when the Bigfoot was mentioned revealed her disturbed mental state.

The Bigfoot burned Bill's face on the hot stove during the final confrontation, leaving him for dead. This act represented the creature's last act of cruelty against the sole survivor. The burning may have been intended to destroy Bill's face and identity, ensuring no one would believe his story, or it simply served as a brutal finishing act of violence.

The earlier attack on the hunter, impaled on a branch, demonstrated the Bigfoot's use of environmental weapons.