| I. | A Student of Theology | [1] |
| II. | The House on the Ramparts | [16] |
| III. | The Quintessential Stone | [31] |
| IV. | Cæsar Basterga | [45] |
| V. | The Elixir Vitæ | [59] |
| VI. | To Take or Leave | [74] |
| VII. | A Second Tissot | [88] |
| VIII. | On the Threshold | [102] |
| IX. | Melusina | [116] |
| X. | Auctio Fit: Venit Vita | [129] |
| XI. | By This or That | [143] |
| XII. | The Cup and the Lip | [157] |
| XIII. | A Mystery Solved | [172] |
| XIV. | "And Only One Dose in all the World!" | [185] |
| XV. | On the Bridge | [200] |
| XVI. | A Glove and What Came of It | [215] |
| XVII. | The Remedium | [227] |
| XVIII. | The Bargain Struck | [242] |
| XIX. | The Departure of the Rats | [257] |
| XX. | In the Darkened Room | [271] |
| XXI. | The Remedium | [285] |
| XXII. | Two Nails in the Wall | [301] |
| XXIII. | In Two Characters | [318] |
| XXIV. | Armes! Armes! | [335] |
| XXV. | Basterga at Argos | [350] |
| XXVI. | The Dawn | [365] |