Anita Rani makes her second BBC One appearance of the week, although unlike her Strictly Come Dancing performance, this delve into her family's past proves to be a much more sobering affair. Anita never met her maternal grandfather Sant Singh, but she knows he had another wife and family before meeting her grandmother - and that he suffered terrible tragedy at the time of India's Partition. Here the broadcaster travels to India to see if she can find out more about his first family and what happened to them. It proves to be an extraordinary and harrowing journey for the broadcaster.