6CHAPTER VI. “ ‘I,’ Said the Sparrow”
19CHAPTER XIX. The Red Note-book
7CHAPTER VII. Vance Reaches a Conclusion
20CHAPTER XX. The Nemesis
8CHAPTER VIII. Act Two
21CHAPTER XXI. Mathematics and Murder
9CHAPTER IX. The Tensor Formula
22CHAPTER XXII. The House of Cards
10CHAPTER X. A Refusal of Aid
23CHAPTER XXIII. A Startling Discovery
11CHAPTER XI. The Stolen Revolver
24CHAPTER XXIV. The Last Act
12CHAPTER XII. A Midnight Call
25CHAPTER XXV. The Curtain Falls
13CHAPTER XIII. In the Bishop’s Shadow
26CHAPTER XXVI. Heath Asks a Question
