to whether the mystery woman whose appearance has so upset Lisa is really Marta. The porter Lisa bribed earlier to discover the woman's identity only revealed that she was British. He now returns to add that although she is travelling on a British passport, she is not English and is on deck reading a Polish book. Walter offers to confront the mystery woman to set Lisa's mind at rest before they both decide they are letting their minds run away with themselves. They both resolve to join the dancing in the salon. Lisa dances whilst her husband talks to another passenger. The mystery woman is seen passing a play-request to the band leader. The band then play the same tune that was once the camp Kommandant's favourite waltz. This musical coincidence and the still unknown identity of the passenger further convinces Lisa that Marta is somehow alive and on the boat. Lisa is reduced to terror and shrinks from sight of the mystery passenger retreating from her down the stairs of the liner into the horrors of Tadeusz's final moments. Scene 5 : Tadeusz is dragged before the Kommandant to provide him with his favourite waltz music. Instead he plays the Chaconne from Bach's Partita for Violin No. 2, making a defiant purely musical protest. Thus he deprives Lisa of her plan to have him executed via her report and deprives the Kommandant of his illusion that he can force people to play him his favourite music under pain of death. Tadeusz seals his own fate and, his violin being smashed, he is dragged off to his death. All the while, Lisa observes the scene whilst still in her ballgown. Epilogue : The stage becomes completely empty apart from Lisa still in her ballgown who slumps down sitting to the rear silently. Marta enters. She is observed to be wearing non-prisoncamp clothing and with her hair unshaven. She sings that the dead should never be forgotten and they can never forgive. Lisa can only observe, unable to have Marta change her attitude and provide her the closure she craves. The scene fades away musically as does the light and the opera ends very quietly in total darkness. At no point in the opera is the mystery woman on the boat confirmed as Marta nor does Lisa or anyone ever interact with her on the boat. Lisa's certainty that Marta died