While volcanoes spew golden lava around the world, djinn twins John and Philippa, with their parents, Uncle Nimrod, and Groanin, face evil more powerful than ever before when they try to stop the wicked djinn trying to rob the grave of Genghis Khan.

After getting help for their father, who is cursed with rapid aging, twelve-year-old djinn twins John and Philippa and friends travel through the spirit world in search of Faustina, the only one who can keep their mother from becoming the Blue Djinn, and discover a link to museum thefts and hauntings throughout the word.

Twelve-year-old twins Philippa and John have more adventures when they become involved in an international adventure involving the Blue Djinn, the supreme arbiter of all djinn.

John and Philippa Gaunt are off on another spellbinding adventure in bestselling author P. B. Kerr's Children of the Lamp series!John and Philippa Gaunt are all ready for their lives to return to normal now that their mother has given up her djinn powers. But the siblings are quickly drawn into yet another mystery when the world's luck tips wildly out of balance (to the world's detriment). The key to the world's fate lies with five fakirs who were buried alive, each of whom guards a secret that can answer a great question of the universe. But there's an evil djinn desperate to dig up the secrets. Without their mother's powerful magic, John and Philippa must face this djinn alone.

Fiery magic in a land of ice! The third djinncredible adventure for the Children of the Lamp. Midnight intruders and murder by snakebite sweep the Gaunt twins headlong into another breathtaking adventure. In snowy Nepal, they face the ultimate test of their amazing djinn powers. Can they uncover the venomous secrets of an evil Snake Cult to find the long-lost talisman of the Cobra King?

When a collection of Incan artifacts goes missing, the Blue Djinn of Babylon dispatches the twins to South America to recover them. Along the way, though, John and Philippa encounter their friend Dybbuk, who has been drained of his djinn powers but is determined to get them back.