

Outside, the groundskeeper, Willard, is seen trimming a hedge with a chainsaw. The school's dean asks Professor Brown, who teaches anatomy, to give the detectives a tour of the school. While studying outside in broad daylight, a girl is decapitated with a chainsaw by an unidentified killer who steals her head. He also unboxes the bloodied jigsaw puzzle and starts to put it together. Forty years later, after witnessing a female skateboarder smash into a mirror, a black-clad figure opens a box containing the bloodied clothing and a photograph of Timmy's mother. The police believe Timmy's story and he is sent to live with his aunt.

When the police arrive, Timmy hides inside a closet and pretends to be a witness to the crime. After she orders him to dispose of the puzzle, he returns with an axe, murders her, then dismembers her body with a hacksaw.

In 1942, a 10-year-old boy named Timmy is chastised by his mother who compared him to his father for playing with a jigsaw puzzle of a nude woman.
