Secret Britain: A journey through the Second World War's hidden bases and battlegrounds

50 Codes that Changed the World: . . . And Your Chance to Solve Them!

Dresden: The Fire and the Darkness

Berlin: Life and Loss in the City That Shaped the Century

Saint Petersburg: Sacrifice and Redemption in the City That Defied Hitler

The Lady in the Cellar: Murder, Scandal and Insanity in Victorian Bloomsbury