The Lost Empire of KoombaPaperback - 2009
Keeah, Julie, and Neal are determined to find a cure for the poison that transformed Eric into the evil Prince Ungast. Their quest takes them to a lost empire deep in the desert, where the mischievous Sand Children are hiding a magical elixir that may hold the secret to Eric's recovery. But the journey is filled with danger, for Gethwing is determined to stop them. And the Moon Dragon has a powerfulnew henchman at his disposal: Lord Sparr...
Publisher: New York ; Toronto : Scholastic, 2009.
Characteristics: 118 pages :,illustrations ;,20 cm.