CHAPTER I
TWILIGHT IN WINDY HOLLOW
CHAPTER II
MERCEDES ENTERS THE HOUSE
CHAPTER III
WHAT FOLLOWED NEXT
CHAPTER IV
KENNETH TACKLES THE PROBLEM
CHAPTER V
IN THE FOG
CHAPTER VI
ENTER NUMBER FIVE SURFMAN
CHAPTER VII
THE GRAY SHAWL
CHAPTER VIII
CAPTAIN MATSON IS PUZZLED
CHAPTER IX
DOWN THE BAY
CHAPTER X
ON PATROL
CHAPTER XI
A NEW FACTOR IN THE PROBLEM
CHAPTER XII
A SCRAP OF PAPER
CHAPTER XIII
WARNING!
CHAPTER XIV
THE THUMB OF BENNIE MORRIS
CHAPTER XV
SOME SIDE LIGHTS ON ANNE SHAW
CHAPTER XVI
MERCEDES GOES IT ALONE
CHAPTER XVII
THE SEARCH IS ON
CHAPTER XVIII
THE CLUE OF THE SILVER SPECTACLES
CHAPTER XIX
THE SECRET OF THE CUSHMAN SHACK
CHAPTER XX
THE PRISONER FREE
CHAPTER XXI
THE MYSTERY OF ANNE SHAW
