Directed and produced by Emmy® winner Amy Schatz, the short film THE NUMBER ON GREAT-GRANDPA’S ARM interweaves haunting historical footage and hand-painted animation to tell a heartbreaking story of Jewish life in Eastern Europe before and during the Holocaust. Presented by HBO with the Museum of Jewish Heritage – A Living Memorial to the Holocaust, the short film debuts SATURDAY, JAN. 27 (6:00-6:20 p.m. ET/PT), International Holocaust Remembrance Day, exclusively on HBO.