CHAPTER I
THE SOCIAL GANGSTER
CHAPTER II
THE CABARET ROUGE
CHAPTER III
THE FOX HUNT
CHAPTER IV
THE TANGO THIEF
CHAPTER V
THE "THE DANSANT"
CHAPTER VI
THE SERUM DIAGNOSIS
CHAPTER VII
THE DIAMOND QUEEN
CHAPTER VIII
THE ANESTHETIC VAPORIZER
CHAPTER IX
THE TWILIGHT SLEEP
CHAPTER X
THE SIXTH SENSE
CHAPTER XI
THE INFERNAL MACHINES
CHAPTER XII
THE SUBMARINE BELL
CHAPTER XIII
THE SUPER-TOXIN
CHAPTER XIV
THE SECRET AGENTS
CHAPTER XV
THE GERM OF ANTHRAX
CHAPTER XVI
THE SLEEPMAKER
CHAPTER XVII
THE INTER-URBAN HANDICAP
CHAPTER XVIII
THE TOXIN OF FATIGUE
CHAPTER XIX
THE X-RAY DETECTIVE
CHAPTER XX
THE MECHANICAL CONNOISSEUR
CHAPTER XXI
THE RADIOGRAPH WITNESS
CHAPTER XXII
THE ABSOLUTE ZERO
CHAPTER XXIII
THE VACUUM BOTTLE
CHAPTER XXIV
THE SOLAR PLEXUS
CHAPTER XXV
THE DEMON ENGINE
CHAPTER XXVI
THE ELECTROLYSIS CLEW
CHAPTER XXVII
THE PERPETUAL MOTION MACHINE
CHAPTER XXVIII
THE CANCER HOUSE
CHAPTER XXIX
THE QUACK DOCTORS
CHAPTER XXX
THE FILTERABLE VIRUS
CHAPTER XXXI
THE VOODOO MYSTERY
CHAPTER XXXII
THE FLUORISCINE TEST
CHAPTER XXXIII
THE RESPIRATION CALORIMETER
CHAPTER XXXIV
THE EVIL EYE
CHAPTER XXXV
THE BURIED TREASURE
CHAPTER XXXVI
THE WEED OF MADNESS
