Page "Psycho II (film)" Paragraph 14

Norman gives her a cup of tea.

Ms. Spool tells him that she is his real mother, that Mrs. Bates was her sister, who adopted Norman as an infant while Ms. Spool was institutionalized.

She further reveals that she was the murderer, having killed anybody who tried to harm her son.

As she sips the tea, Norman kills her with a sudden blow to the head with a shovel.

Norman is now completely insane again.

He carries Ms. Spool's body upstairs to Mother's room and we hear Mother's voice warn Norman not to play with " filthy girls ".

Norman reopens the Bates Motel and stands in front of the house, waiting for new customers.

Thunder is heard and Mother watches from the window upstairs.