Watch Sibyl for Free: How to Stream the Movie Online at 123Movies. . Sibyl, a jaded psychotherapist, returns to her first passion: writing. But her newest patient Margot, a troubled up-and-coming actress, proves to be a source of inspiration that is far too tempting. Fascinated almost to the point of obsession, Sibyl becomes more and more involved in Margot’s tumultuous life, reviving volatile memories that bring her face to face with her past.