6CHAPTER VI THE VISIT OF OKIU
20CHAPTER XX FRESH DEVELOPMENTS
7CHAPTER VII THE METHYLENE STAIN
21CHAPTER XXI THE MAN WITH THE DECORATION
8CHAPTER VIII THE HOUSE ON FORDHAM ROAD
22CHAPTER XXII THE GERMAN EMBASSY BALL
9CHAPTER IX OKIU ONCE MORE
23CHAPTER XXIII WHAT VON STUNNENBERG THOUGHT
10CHAPTER X SOME STARTLING INTELLIGENCE
24CHAPTER XXIV SURPRISED!
11CHAPTER XI A RAY OF LIGHT
25CHAPTER XXV CAUGHT!
12CHAPTER XII KARKOWSKY GETS SOME ATTENTION
26CHAPTER XXVI THE TRUTH
13CHAPTER XIII OLD NANON SPEAKS
27CHAPTER XXVII CONCLUSION
14CHAPTER XIV OKIU WRITES A LETTER
