| CHAPTER | PAGE | |
| I. | The Affair of the Ivory Boxes | 1 |
| II. | The Identity of the Final Victim | 17 |
| III. | The Riddle of the Circular Counters | 32 |
| IV. | The Strange Case of Michael Hall | 48 |
| V. | The Evidence of the Cigarette-end | 67 |
| VI. | The Mystery of "Old Mrs. Jardine" | 86 |
| VII. | The Death-trap in the Tudor Room | 102 |
| VIII. | The Mystery of Cross Roads Farm | 120 |
| IX. | The Conundrum of the Golf Links | 137 |
| X. | The Diamond Necklace Scandal | 156 |
| XI. | The Disappearance of Dr. Smith | 175 |
| XII. | The Affair of the Stolen Gold | 195 |
| XIII. | The Will of the Eccentric Mr. Frisby | 217 |
| XIV. | The Case of the Murdered Financier | 239 |
| XV. | The Strange Affair of the Florentine Chest | 258 |
| XVI. | The Search for the Missing Fortune | 280 |