[1] It details the brief, sexually violent relationship between an art gallery owner and a Wall Street broker – based on Day's own experiences.

The memoir was famously adapted into the 1986 erotic drama 9½ Weeks, starring Kim Basinger and Mickey Rourke.

An art gallery owner enters a nine-week affair with a Wall Street broker who regularly sexually abuses her in his apartment for amusement and pleasure.

Eventually, the relationship culminates in him ordering her to rob a man at knifepoint in an elevator; she does so, and he then forces her to have sex with someone else while he watches.

In a 2012 New Yorker article, Sarah Weinman writes "Nine and a Half Weeks is a potent antidote to what passes for erotica today.