You can’t get much more meta than a documentary about documentaries. This two part history of non-fiction series sheds light on more than just filmmaking. They open a fascinating window on the history of the world during the age of cinema. In particular, the Great Depression and the buildup to World War II come to life as never before in this collection of film clips and interviews with early documentary filmmakers, film historians and critics. Award-winning actor and social activist Alec Baldwin narrates.