Chapter 1
THE STRANGE MESSAGE
Chapter 2
THE TRAIN WEREWOLF
Chapter 3
WARNING OF THE WEREWOLF
Chapter 4
DEAD MAN
Chapter 5
THE WEREWOLF CRIES
Chapter 6
SQUARE WHITE DEATH
Chapter 7
STRANGE ATTACKERS
Chapter 8
THE MAN IN THE WHITE HAT
Chapter 9
THE IVORY-CUBE TRAIL
Chapter 10
CABIN OF MURDER
Chapter 11
THE VANISHED BOX
Chapter 12
THE HAND THAT BECKONED
Chapter 13
AN OFFER
Chapter 14
THE TRAP IN A TRAP
Chapter 15
WHEN TROUBLE DOUBLES
Chapter 16
INSIDE THE IVORY BLOCK
Chapter 17
INTO THE EARTH
Chapter 18
THE SKELETON CREW
Chapter 19
THE KILLING DEAD
