From the New York times bestselling author p. Kerr, comes the third volume in this exceptional, imaginative adventure series about a twin boy and girl who discover they are djinns. In the third book of the bestselling ch...From the New York times bestselling author p. Kerr, comes the third volume in this exceptional, imaginative adventure series about a twin boy and girl who discover they are djinns. 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.