A Matter of Time is a 1976 American-Italian musical fantasy film starring Liza Minnelli and Ingrid Bergman, directed by Vincente Minnelli. The screenplay, by John Gay, is based on the novel The Film of Memory (La Volupté d'être) by Maurice Druon. The fictional story is based loosely on the real life exploits of the infamous Italian eccentric, the Marchesa Casati, whom Druon knew during her declining years in London while he was stationed there during World War II. The film marked the first screen appearance for Isabella Rossellini, the last for Charles Boyer, and it proved to be Vincente Minnelli's final project.