© BY GROSSET & DUNLAP, INC., 1961
Transcriber's note: Extensive research did not uncover any evidence that the copyright on this publication was renewed.
ALL RIGHTS RESERVED
PRINTED IN THE UNITED STATES OF AMERICA

CONTENTS

CHAPTER

  1. [ Pirate Missile ]
  2. [ Undersea Survey ]
  3. [ Invisible Sub ]
  4. [ Aerial Attack ]
  5. [ A Hunch Pays Off ]
  6. [ The Caisson Clue ]
  7. [ Porpoise Tag ]
  8. [ Date Trouble ]
  9. [ A Magnetic Kidnaping ]
  10. [ Telephone Code ]
  11. [ Square-Dance Hoax]
  12. [ Detection Test ]
  13. [ Enemy Frogmen]
  14. [ A Propaganda Blitz]
  15. [ Mountain Hike ]
  16. [ The Gunman's Surprise ]
  17. [ A Missing Amulet]
  18. [ Smiley the Sea Cow ]
  19. [ Flash from the Depths]
  20. [ A Lucky Blast ]

CHAPTER I

PIRATE MISSILE

Tense, excited men gazed spaceward from the ships and planes of the South Atlantic task force. Other watchers waited breathlessly in the control room of the ship Recoverer. Among these was Tom Swift Jr.

"How close to earth is our Jupiter probe missile?" Bud Barclay asked Tom excitedly.

The lanky blond youth beside him, in T shirt and slacks, shot a glance at the dials of the tracking equipment. "Eight thousand miles from this spot, Bud. It should land here in fifteen minutes!"