"I want you to promise me, but also to promise each other, that you will always support one another; that no matter what happens, you will remain united. That you will not allow anything to separate you. Do you understand what I'm saying?"

In their childhood, Simi, Magda, and Livia make a promise to their father – that they will always be together, no matter what happens. Years later, the Nazis deport fifteen-year-old Livia to Auschwitz. Nineteen-year-old Simi remembers their promise and follows Livia, determined to protect her – or die with her. Seventeen-year-old Magda stays in Slovakia and manages to escape for a while, but soon she is captured as well and deported to the death camp.

Within the horror of Auschwitz-Birkenau, the three sisters reconnect and make a new promise, this time to each other: that they will survive. An exceptionally told story, with many vivid descriptions, The Three Sisters is the true story of the Mehler sisters. Two of the sisters live today in Israel with their families and chose Heather Morris to narrate their story in this novel.

They said about the book: "Morris masterfully recounts the lives of the Mehler sisters, from their childhood to their old age, having found the perfect balance between fiction and thorough research and illuminating every snapshot of their lives. A story of hope and resilience that will inspire all readers." –Publisher’s Weekly (Starred review)