CONTENTS
| CHAPTER | |
| I. | ["YOUR BIRD!"] |
| II. | [A PRICE ON HIS HEAD] |
| III. | [CONCERNING PETER BARCROFT] |
| IV. | [WHEN THE ZEPPELIN WAS OUT] |
| V. | [AT LADYBIRD FOLD] |
| VI. | [KIDNAPPED] |
| VII. | [THE RAID] |
| VIII. | ['MIDST THE SCENE OF RED RUIN] |
| IX. | [BETTY] |
| X. | [THE SEAPLANE'S QUEST] |
| XI. | [THE TERRORS OF THE AIR] |
| XII. | [THE RAIDER'S RETURN] |
| XIII. | [EXIT SEAPLANE NO. 445B] |
| XIV. | [BUTTERFLY] |
| XV. | [RECALLED BY WIRE] |
| XVI. | [CAPTIVES IN A SUBMARINE] |
| XVII. | [THE MIDDLE WATCH] |
| XVIII. | [AN OCEAN DUEL] |
| XIX. | [HELD UP IN THE NORTH SEA] |
| XX. | [INVESTIGATIONS] |
| XXI. | [ON THE TRAIL] |
| XXII. | [THE STRUGGLE ON THE CLIFFS] |
| XXIII. | [ON THE ROCKS] |
| XXIV. | [ENTWISTLE'S DECISION] |
| XXV. | [THE BOMBING EXPEDITION] |
| XXVI. | [A FUTILE RESCUE] |
| XXVII. | [FUGITIVES] |
| XXVIII. | [TRACKED] |
| XXIX. | [GASSED] |
| XXX. | [THE BARN BY THE RIVER] |
| XXXI. | [THE FRONTIER] |
| XXXII. | [AN AVERTED CATASTROPHE] |
| XXXIII. | [VON EITELWURMER'S OPPORTUNITY] |
| XXXIV. | [KIRKWOOD'S WINDFALL] |
| XXXV. | [ONE CARTRIDGE LEFT] |
| XXXVI. | [THE ELUSIVE OBJECTIVE] |
| XXXVII. | ["THE GREAT STRAFE"] |
| XXXVIII. | [SNATCHED FROM HER PURSUERS] |
| XXXIX. | [AND LAST] |