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
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
