Jean-Paul Sartre wrote the original script at the request of director John Huston, but it was unused as it was too long. It was later published in book form as "The Freud Scenario."
Montgomery Clift had so many health problems on the set of this film, that Universal-International sued him for the cost of the film's production delays. During the trial, the film opened and was such a huge hit that Clift's lawyers brought up the point that the film was doing well because of Clift's involvement. Clift won a lucrative settlement.