"Vienna, 1938. Samuel Adler was six years old when his father disappeared during Kristallnacht--the night their family lost everything. Samuel's mother secured a spot for him on the last Kindertransport train out of Nazi-occupied Austria to the United Kingdom, which he boarded alone, carrying nothing but a change of clothes and his violin. Arizona, 2019. Eight decades later, Anita Diaz, a blind seven-year-old girl, and her mother board another train,...