Letter From An Unknown Woman

In Vienna, about 1900, a man arrives at his flat, instructing his man-servant that he will leave before morning. Stefan Brand, formerly a concert pianist, is planning to leave Vienna to avoid a duel. His servant gives him a letter from an unknown woman, which he reads. In flashbacks we see the lifelong passion of Lisa Berndle for him: first as a girl who was his neighbour; next as a young woman who, in secret, has his child; then as a mature woman who meets him again and abandons husband and son to be with him. Each time he does not remember who she is or that they have ever met..