British writer F.B. Kerr, known to adults as a mystery writer, once again takes his young readers on amazing adventures around the world following John and Philippa Gaunt - children, each of whom has awakened a kind genie. Danger, trials, the darkness of the unknown, chance and, of course, magic - all this permeates the fourth part of the epic “Children of the Lamp”. This time, the twins are entrusted with a truly supernatural mission: to save humanity from the machinations of their worst enemy, Iblis. Children will enter the world of spirits and encounter mysterious Chinese terracotta warriors. Along the way they will meet the most unexpected characters: from the famous traveler Marco Polo to the Mongol Khan Kublai Khan.