Ingeborg Day

Ingeborg Day (née Seiler; November 6, 1940 – May 18, 2011) was an Austrian–American author who wrote the semi-autobiographical erotic novel Nine and a Half Weeks which she published under the pseudonym Elizabeth McNeill and which was made into the 1986 film of the same name starring Kim Basinger and Mickey Rourke.

Life Day was born in Graz, Austria, in November 1940. Her father, Ernst Seiler, was a member of the Nazi SS organization. She spent the last two years of the war on her grandmother's farm. In 1980, she published her memoir Ghost Waltz.

In 1991, she married Donald Sweet, a man 14 years her senior. They moved to Ashland, Oregon, shortly after the wedding.

She died by suicide on May 18, 2011, aged 70, after several years of illness. Her husband died four days later.

Books Nine and a Half Weeks: A Memoir of a Love Affair (1978, E. P. Dutton) Ghost Waltz: A Memoir (1980, Viking Press)