Once Is Not Enough (1975)
Genres: Drama, Romance
Cast: Kirk Douglas, Alexis Smith, David Janssen, Deborah Raffin, Brenda Vaccaro, George Hamilton
Jacqueline Susann's Once Is Not Enough is a 1975 American romance film, directed by Guy Green, starring Kirk Douglas, Alexis Smith, David Janssen, George Hamilton, Brenda Vaccaro, Melina Mercouri, and Deborah Raffin. It was produced by Howard W. Koch and written by Julius J. Epstein, based on the 1973 novel Once Is Not Enough by Jacqueline Susann.