| CHAPTER | PAGE | |
| I | The Epidemic of Mystery | 9 |
| II | Husband, Wife—and Another | 17 |
| III | The Hidden Scandal | 30 |
| IV | The Bronze Face | 41 |
| V | Behind the Door | 52 |
| VI | Cora Hartsilver’s Confession | 61 |
| VII | Concerns “Dear Jessica” | 72 |
| VIII | In Which a Discovery is Made | 81 |
| IX | Befriending a Reporter | 91 |
| X | A Paragraph for the Papers | 104 |
| XI | Hush Money | 112 |
| XII | Yootha’s Presentiment | 122 |
| XIII | Box Number Thirteen | 133 |
| XIV | Concerns a Necklace | 142 |
| XV | Some Crooked Questions | 153 |
| XVI | Gathering Clouds | 163 |
| XVII | “Nobody Must Know” | 173 |
| XVIII | What Dr. Johnson Knew | 182 |
| XIX | Without a Stain | 194 |
| XX | Concerns a Rumor | 205 |
| XXI | The Little Horses | 215 |
| XXII | Another Mystery Man | 226 |
| XXIII | A Friend Indeed | 236 |
| XXIV | The Tightening Grip | 247 |
| XXV | The City of Smiles | 257 |
| XXVI | Sunset Love | 266 |
| XXVII | Against the Wind | 276 |
| XXVIII | Number Fifteen | 286 |
| XXIX | A Message from Yootha | 291 |
| XXX | Blenkiron’s Narrative | 301 |
| XXXI | Conclusion | 307 |