In 1967, a twenty-five-year-old refugee named Bashir Khairi traveled from the Palestinian hill town of Ramallah to Ramla, Israel, with a goal: to see the beloved stone house with the lemon tree in its backyard that he and his family had been forced to leave nineteen years earlier. When he arrived, he was greeted by one of its new residents: Dalia Eshkenazi Landau, a nineteen-year-old Israeli college student whose family had fled Europe following...