Leah has been living with akinetopsia, or motion blindness, since she was a child. For the last 20 years, she hasn’t been able to see movement. But she does see a good deal, and with her acute senses of smell and hearing, very little escapes her notice. When Alice moves into the apartment next door, Leah can immediately smell the anxiety wafting off her. Worse, she can’t help but hear Alice and a late-night visitor engage in a violent fight. Then one night, Leah wakes up to someone in her apartment. She blacks out and in the morning is left wondering if she dreamt the episode. Yet the scent of the intruder follows her everywhere. And when she hears Alice through the wall pleading for her help, Leah makes a decision that will test her courage, her strength and ultimately her sanity.

Berlin, 1931: Ally Keller, a talented young poet, gives birth to a mixed-race daughter she names Lilith. As the Nazis rise to power, she sets in motion a dangerous plan to send her daughter across the ocean to safety. Havana, 1958: Now an adult, Lilith has few memories of her mother or her childhood in Germany. But as the flames of revolution ignite, Lilith and her newborn daughter, Nadine, find themselves at a terrifying crossroads. Berlin, 1988: Nadine’s daughter, Luna, encourages her to uncover the truth about the choices her mother and grandmother made to ensure the survival of their children. And it will fall to Luna to come to terms with a shocking betrayal that changes everything she thought she knew about her family’s past.

Berlin, 1939. The dreams that Amanda Sternberg and her husband, Julius, had for their daughters are shattered when the Nazis descend on Berlin, burning down their beloved family bookshop and sending Julius to a concentration camp. Desperate to save her children, Amanda flees toward the south of France, where the widow of an old friend of her husband’s has agreed to take her in. Along the way, a refugee ship headed for Cuba offers another chance at escape. There, at the dock, Amanda is forced to make an impossible choice that will haunt her for the rest of her life. Once in Haute-Vienne, her brief respite is interrupted by the arrival of Nazi forces, and Amanda finds herself in a labor camp where once again she must make a heroic sacrifice.

In 1939, barred from places that once felt like home and stripped of their possessions, Hannah Rosenthal and her best friend Leo Martin make a pact: Come what may, they promise to have a future together. A chance to have that future appears in the form of the St. Louis, a transatlantic liner that can supposedly provide Jews safe passage to Cuba. Seven decades later, Anna Rosen receives a package from Hannah, a great aunt she has never met. She and her mother travel to Havana to meet her, and learn the story of how Hannah and Leo honored the solemn pact they made.