Nine and a Half Weeks (book)

Nine and a Half Weeks: A Memoir of a Love Affair is a 1978 memoir by Ingeborg Day, first published under the pen name Elizabeth McNeill. It details the brief, sexually violent relationship between an art gallery owner and a Wall Street broker – based on Day's own experiences.

Source: Wikipedia — Nine and a Half Weeks (book) (CC BY-SA 4.0)