- CHAPTER I PIRATE MISSILE
- CHAPTER II UNDERSEA SURVEY
- CHAPTER III INVISIBLE SUB
- CHAPTER IV AERIAL ATTACK
- CHAPTER V A HUNCH PAYS OFF
- CHAPTER VI THE CAISSON CLUE
- CHAPTER VII PORPOISE TAG
- CHAPTER VIII DATE TROUBLE
- CHAPTER IX A MAGNETIC KIDNA
- CHAPTER X TELEPHONE CODE
- CHAPTER XI SQUARE-DANCE HOA
- CHAPTER XII DETECTION TEST
- CHAPTER XIII ENEMY FROGMEN
- CHAPTER XIV A PROPAGANDA BL
- CHAPTER XV MOUNTAIN HIKE
- CHAPTER XVI THE GUNMAN'S SU
- CHAPTER XVII A MISSING AMUL
- CHAPTER XVIII SMILEY THE SE
- CHAPTER XVIII SMILEY THE SE
- CHAPTER XIX FLASH FROM THE
- CHAPTER XX A LUCKY BLAST
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