Into Oblivion (The Dragon Chronicles Book 4)

After visiting the grave of their mentor, Aeli and Farouk return to find that the Rangers have discovered a rift between dimensions. Curious as to the nature of the phenomenon, Farouk uses his new ability to cross over. What he finds there is shocking, and is found to be linked not only to The Lifegiver, but an ancient malevolent spirit that has haunted Eirenoch for thousands of years.
The Dragon, having gained enough power to escape his prison in human form, takes Khalid on a quest to the center of the Earth. There, they will uncover an ancient secret that could aid the Dragon in protecting the Great Mother from further harm.
The Onyx Dragon, now the king of Eirenoch, prepares his troops to set sail for the mainland and join the armies that lie in wait. He is, however, distracted by the series of assassinations that have been going on for the past year, and begins to see a connection between the killer and the man who raised him as his own.
Garret, still furthering the cause of the Great Mother, begins to remember pieces of his former life. His dreams tell him of the great love he once had for a mysterious woman, and the life he once lived as her protector.