Jacqueline Susann sold. By 2016, the book had sold more than 31 million copies. In 1967, the book was adapted into the film of the same name, starring Barbara Parkins as Anne, Patty Duke as Neely, Sharon Tate as Jennifer, and Susan Hayward as Helen Lawson, the aging Broadway legend. Susann made a cameo appearance as a reporter at the scene of Jennifer North's suicide. "Valley of the Dolls" received scathing reviews, but was a widespread commercial success, becoming the sixth highest-grossing film of its year with $44.4 million at the domestic box office, a huge amount for its time. Susann herself
Jacqueline Susann loathed the film version of "Valley", believed this adaptation was even worse. Susann's third novel, "Once Is Not Enough", was published by Morrow on March 20, 1973. "Once" is the story of January Wayne, daughter of a famous film and stage producer, who is hospitalized in Switzerland for three years. When she returns home to New York City, she finds that the world is far different from the one she had left. January contends with the social upheavals of the late 1960s and early 1970s in a graphic, driving story. Susann was candid about the theme of the book, stating