The Fortress Of Diamonds — Mark Terry

16-year-old Jericho Miles's father, famous archaeologist, Roger Miles, disappears over the Arizona desert in his small plane, assumed dead. But Jericho is left a coded message by her father that suggests he is very much alive and in pursuit of the fabled Fortress of Diamonds. And Jericho's not the only one - crazy billionaire and wannabe vampire Viktor Gregorovitch is intent on finding the Fortress of Diamonds as well, believing it is the source of great mystical power and key to the disappearance of the ancient Anasazi. With her father's graduate student, Ashley McGregor, Jeri and Ash will travel deep into canyon country and face dangers beyond their wildest dreams in pursuit of her father and the secrets of the Fortress of Diamonds.