I write as a viewer who has never experienced anything like the Nazi invasion and occupation of Poland, France and the Low Countries. And for that I am truly grateful. But I have studied history, especially 20th-century European history and the emergence of fascism. and I think this series really gives the viewer a glimpse of what those events did to the lives of ordinary - and extraordinary - people who experienced them. And, if the coronavirus pandemic doesn't kill all of us, I'm looking forward to another season of World on Fire on Masterpiece. Thanks to ALL involved in bringing this to PBS.