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| Chapter | Page | |
|---|---|---|
| I | The Coming of the Terror | 1 |
| II | Death in the Village | 26 |
| III | The Doctor's Theory | 32 |
| IV | The Spread of the Terror | 49 |
| V | The Incident of the Unknown Tree | 64 |
| VI | Mr. Remnant's Z Ray | 79 |
| VII | The Case of the Hidden Germans | 93 |
| VIII | What Mr. Merritt Found | 107 |
| IX | The Light on the Water | 121 |
| X | The Child and the Moth | 136 |
| XI | At Treff Loyne Farm | 149 |
| XII | The Letter of Wrath | 163 |
| XIII | The Last Words of Mr. Secretan | 181 |
| XIV | The End of the Terror | 196 |
