Kit Harington, Keira Knightley, Toby Jones and Emeli Sandé Explore Their Families’ Pasts in Season 2 of My Grandparents’ War. 　　Four-part World War II history-genealogy series returns on Tuesdays, April 11-May 2 on PBS. 　　Returning for a second season of compelling personal stories set during some of the most dramatic moments of World War II, My Grandparents’ War takes a fascinatin...