"The Lord of Opium" by Nancy Farmer is a young adult science fiction novel and a sequel to "The House of the Scorpion". The story takes place in a future where drug lords have taken over countries and control the production of opium. The protagonist, Matteo Alacrán, is a clone of the powerful drug lord El Patrón, who ruled over the opium fields. After El Patrón's death, Matteo becomes the new Lord of Opium and must navigate the complex and dangerous world of drug politics. Along the way, he discovers the truth about his own identity and confronts the injustices of the system he inherited. The book explores themes of power, corruption, and the consequences of genetic engineering. It is a gripping and thought-provoking story that is sure to captivate readers of all ages.