From New York Times-bestselling author P. B. Kerr comes the third volume in this exceptional, imaginative adventure series about a twin boy and girl who discover they are djinns, or genies. In the third book of the bestselling Children of the Lamp series, djinn twins, John and Philippa Gaunt, are on the trail of another magical mystery. As they travel from New York to London to Nepal and India on a whirlwind adventure, the twins try to help their friend and fellow djinn, Buck, find out who murdered his friend using the venomous snakebite of the king cobra. All too soon, John and Philippa find themselves caught up in the lethal world of the Cult of the Nine Cobras, only to discover that they themselves are a target of the creepy cobra cult.