CHAPTER I. Garth Is Shown a Gray Mask
CHAPTER II. It Opens Nora's Eyes
CHAPTER III. In the Steel Room
CHAPTER IV. Garth Buys a BoutonniÈre
CHAPTER V. What Happened at Elmford
CHAPTER VI. A Crying Through the Silence
CHAPTER VII. Nora Fears for Garth
CHAPTER VIII. Through the Dark
CHAPTER IX. The Phantom Army
CHAPTER X. The Coins and the Chinaman
CHAPTER XI. Nora Disappears in an Empty House
CHAPTER XII. The Hidden Door
CHAPTER XIII. Alsop's Incredible Visitor
CHAPTER XIV. The Levantine Who Guarded a Curtain
CHAPTER XV. The Veiled Woman
CHAPTER XVI. A Note from the Dead
CHAPTER XVII. The Knife by the Lifeless Hand
CHAPTER XVIII. The Stained Robe
CHAPTER XIX. Payment Is Demanded for the Gray Mask
CHAPTER XX. The Black Cap
CHAPTER XXI. The Antics of a Train