by
| I. | Mr. Morgan Meets Tragedy |
| II. | Inspector French Gets Busy |
| III. | Experimental Detection |
| IV. | A Change of Venue |
| V. | Messrs. Berlyn and Pyke |
| VI. | The Despatch Of The Crate |
| VII. | Dartmoor |
| VIII. | A Fresh Start |
| IX. | A Step Forward |
| X. | London’s Further Contribution |
| XI. | John Gurney, Night Watchman |
| XII. | The Duplicator |
| XIII. | The Accomplice? |
| XIV. | French Turns Fisherman |
| XV. | Blackmail |
| XVI. | Certainty At Last |
| XVII. | “Danger!” |
| XVIII. | On Hampstead Heath |
| XIX. | The Bitterness of Death |
| XX. | Conclusion |