From the New York Times bestselling author, comes the 4th book in this exceptional adventure series about a brother and sister who discover they are djinns.

FORMAT: 9 CDs, Unabridged

Djinn twins John and Philippa are off on another whirlwind adventure that takes them around the globe and into unknown worlds. It's a race against time as they attempt to rescue their mother from her fate as the Blue Djinn of Babylon, reverse an aging curse that has been placed on their father, and stop the mysterious terracotta warriors.