[CHAPTER VI: THE SECRET OF THE NEW ARMOUR-PLATES]
[CHAPTER VII: THE SECRET OF THE IMPROVED "DREADNOUGHT"]
[CHAPTER VIII: THE GERMAN PLOT AGAINST ENGLAND]
[CHAPTER IX: THE SECRET OF OUR NEW GUN]
[CHAPTER X: THE SECRET OF THE CLYDE DEFENCES]
[CHAPTER XI: THE PERIL OF LONDON]
[CHAPTER XII: HOW GERMANY FOMENTS STRIFE]
[CHAPTER XIII: OUR WIRELESS SECRETS]