Chapters (22)(click to expand)
- CONTENTS
- CHAPTER I—THE TOLL IS EXACTED
- CHAPTER II—"FRIENDS OF THE POOR"
- CHAPTER III—ENGINEERING-CRIMINOLOGY
- CHAPTER IV—THE CAR IN THE FOG
- CHAPTER V—THE HAUNTED TREE
- CHAPTER VI—THE FLAMING HAND
- CHAPTER VII—SPIRIT CLUES
- CHAPTER VIII—THE GIRL ON THE HORSE
- CHAPTER IX—LUCY
- CHAPTER X—CROSSED THEORIES
- CHAPTER XI—TELEPHONE CALLS
- CHAPTER XII—SATURDAY
- CHAPTER XIII—A PUZZLING WARNING
- CHAPTER XIV—THE INTRUDERS
- CHAPTER XV—THE MASK OF DEATH
- CHAPTER XVI—THE FATAL DANCE
- CHAPTER XVII—AT THE DOORSTEP
- CHAPTER XVIII—TRIANGULATION
- CHAPTER XIX—FACE TO FACE
- CHAPTER XX—THE INVISIBLE DETECTIVE
- THE END
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