Jacqueline Susann (August 20, 1918 – September 21, 1974) was an American writer and actress. Her first novel, Valley of the Dolls (1966), is one of the best-selling books in publishing history. With her two subsequent works, The Love Machine (1969) and Once Is Not Enough (1973), Susann became the first author to have three consecutive #1 novels on The New York Times Best Seller List.
