Part I The Sealed Rooms
| I. | THE DOME |
| II. | THE ESTABLISHMENT |
| III. | HUGO EXPLAINS HIMSELF |
| IV. | CAMILLA |
| V. | A STORY AND A DISAPPEARANCE |
| VI. | A LAPSE FROM AN IDEAL |
| VII. | POSSIBLE ESCAPE OF SECRETS |
| VIII. | ORANGE-BLOSSOM |
| IX. | ‘WHICH?’ |
| X. | THE COFFIN |
Part II The Phonograph
| XI. | SALE |
| XII. | SAFE DEPOSIT |
| XIII. | MR. GALPIN |
| XIV. | TEA |
| XV. | RAVENGAR IN CAPTIVITY |
| XVI. | BURGLARS |
| XVII. | POLYCARP AND HAWKE’S MAN |
| XVIII. | HUSBAND AND WIFE |
| XIX. | WHAT THE PHONOGRAPH SAID |
Part III The Tomb
| XX. | ‘ARE YOU THERE?’ |
| XXI. | SUICIDE |
| XXII. | DARCY |
| XXIII. | FIRST TRIUMPH OF SIMON |
| XXIV. | THE LODGING-HOUSE |
| XXV. | CHLOROFORM |
| XXVI. | SECOND TRIUMPH OF SIMON |
| XXVII. | THE CEMETERY |
| XXVIII. | BEAUTY |