There's the paint job to end all paint jobs as the Daleks come storming back on to British TV. Writer Mark Gatiss meets the curator of the Cabinet War Rooms and Churchill museum to see what the conditions were like at the epicentre of the British war effort. Backstage, Ian McNeice captures the essence of Winston Churchill on the screen and we find out how Mark went about writing the man behind the myth. Narrated by Alex Price and featuring interviews with Matt Smith, Karen Gillan, Mark Gatiss and Ian McNeice.