CHAPTER I FATHER AND SON
CHAPTER II U. S. R. S.
CHAPTER III WHEN THE CHIEF WAS AWAY
CHAPTER IV THE LABYRINTH
CHAPTER V JERRY’S STORY
CHAPTER VI THE END OF THE LABYRINTH
CHAPTER VII THE PROJECT
CHAPTER VIII BOB’S CHANCE
CHAPTER IX THE DAM
CHAPTER X TED HOYT
CHAPTER XI TROUBLE
CHAPTER XII AT THE CABLE TOWER
CHAPTER XIII AN UNEXPECTED ALLY
CHAPTER XIV THE UNMASKING OF JERRY
CHAPTER XV THE CAPTURE OF BOB
CHAPTER XVI THE ESCAPE
CHAPTER XVII DYNAMITE!
CHAPTER XVIII THE RAIDERS RAIDED
CHAPTER XIX JERRY COMES BACK
CHAPTER XX THE FUTURE
