With no word from Kyja, the people of Farworld are beginning to face the possibility that she is truly dead, and the quest to save Farworld and Earth has failed. In an effort to find a way to bring Kyja back, Marcus must enter the most dangerous place possible the realm of shadows. Meanwhile, Kyja wakes up in a world of lost souls and memories. With no idea who she is, she wanders Fire Keep, home to the most quick tempered of the elementals. The other spirits around her have given up hope. But Kyja is driven by a strong sense that something is wrong and getting worse. A familiar voice warns...

It's time to take the battle to the dragons.

In the third and final volume of the bestselling Mysteries of Cove series, Trenton and Kallista--along with their friends, Plucky, Simoni, Angus, and Clyde--fly their mechanical dragons south toward San Francisco, looking to rescue any survivors from the battle of Seattle.

Arriving in San Francisco and investigating the area in secret, the young riders are reunited with Kallista's father, Leo Babbage, who reveals that the humans in the city are working as slaves to the dragons, but that they don't want to be...