John Huston was originally set to direct this film, but left the production some 17 days before shooting was due to begin. Bryan Forbes agreed to take over in order to have the experience of directing Katharine Hepburn, who became a close friend; he also insisted on hiring Ray Simm, a regular collaborator, as the set designer, and several last-minute alterations were made to already-built settings. Forbes also gave Michael J. Lewis his first job as a film composer.
The only one of Katharine Hepburn's four films during the 1960s (including "Long Day's Journey Into Night" (1962), "Guess Who's Coming to Dinner?" (1967) and "The Lion in Winter" (1968)) in which she wasn't Oscar-nominated.