| Director | Joe D'Amato |
|---|
Mikos Stenopolis is a man who was experimented on in a church-sanctioned scientific experiment that gave him healing powers but inadvertently drove him insane. The Vatican priest who helped create him pursues the homicidal Mikos to a small American town, attempting to kill him by impaling him on a set of railings that disembowel him. Still, he later revives at a local hospital. After brutally murdering a nurse, the madman escapes and goes on a killing spree. The priest informs the hospital and authorities that the only way to kill Mikos is to "destroy the cerebral mass."
While attacking a motorcyclist after escaping from the hospital, Mikos is struck by a hit-and-run driver. The car's driver, Mr. Bennett, and his wife are going to a friend's house for a Super Bowl viewing party, leaving their two children at home with a babysitter. Their daughter, Katya, is confined to her bed because of a problem with her spine, while her younger brother believes that the "Bogeyman" is coming to get him.
Mikos makes his way to the Bennetts' home and, upon recognizing Mr. Bennett's car, begins to murder everyone there. Peggy, the babysitter, is stabbed in the head with a pickaxe, and Emily, a nurse who has been caring for Katya, has her head forced into a lit oven and is stabbed in the throat with a pair of scissors, but not before sending the brother off to get help. Katya struggles to get out of bed to take on the killer herself. Mikos breaks into Katya's bedroom and attacks her, but she manages to stab him in the eyes with a set of drawing compasses. She then stumbles down the hallway as the blinded killer staggers after her. He stalks her through the house, but Katya manages to elude him. The priest arrives and struggles with Mikos, and Katya grabs an axe from a decorative suit of armor and decapitates Mikos with it. The police and the rest of the family arrive to discover Katya standing in the doorway, covered in blood, holding Mikos's severed head.