Krystyna Żywulska, actually Zofia (Sonia) Landau (born September 1, 1914 – August 1, 1992), was a Polish writer, columnist, songwriter and graphic designer of Jewish origin.

She then became involved in the Polish resistance movement under the assumed name Zofia Wiśniewska, working in a group that produced false documents.

Other titles include "Appeal", "Dance, girl",[4] "Unsent letter", "Parade", "Earlier the birches grew here", which were also secretly passed on to other female prisoners and memorized.

On January 18, 1945, during the death march, the evacuation of the concentration camp from Oświęcim (Auschwitz) to Wodzisław Śląski, Żywulska managed to escape at the border of Brzeszcze and Jawiszowice, after which she hid with local residents.

When Harlan and Żywulska began to uncover analogous careers of former Nazis in the German Democratic Republic, the commissioners of the book in which their research was to be published stopped the project.

When an anti-Semitic campaign developed in Poland after March 1968, Żywulska, who only revealed her Jewish background in Empty Water, was ostracized and her sons were forced to leave the country.

In 1991, Maria Nurowska picked up one of the threads of her biography from her time in a concentration camp in her book Love Letters, based on conversations she had previously conducted with Krystyna Żywulska.

[13] In 2012, Jake Heggie composed a short opera, "Another Sunrise", in which the protagonist (Żywulska) tries every night to find a language suitable for expressing her memories so that she can record them on tape.

According to the film's producer, Andrzej Stachecki, "From these stories one can create a certain synthesis treating how a person facing different totalitarianisms knows how to find dignity in extreme situations and, most importantly, to forgive.