Tate played Odile, a witch who exerts a mysterious power over a landowner, played by Niven, and his wife, played by Kerr. Although she did not have as many lines as the other actors, Tate's performance was considered crucial to the film, and she was required, more than the other cast members, to set an ethereal tone. Niven described her as a "great discovery", and Kerr said that with "a reasonable amount of luck" Tate would be a great success. In interviews, Tate commented on her good fortune in working with such professionals in her first film and said that she had learned a lot about acting simply by watching Kerr at work. Much of the filming took place in France, and Sebring returned to Los Angeles to fulfill his business obligations. After filming, Tate remained in London, where she immersed herself in the fashion world and nightclubs. Around this time, she met Roman Polanski.