Ever since the gods of Anicent Egypt were unleashed in the modern world, Carter Kane and his sister, Sadie, have been in trouble. As decendants of the House of Life, the Kanes have some powers  at their command. But devious gds haven't given them the time to master their skills at Brooklyn House, a training ground for young magicians. And now their most threating enemy yet, The Chaos Snake, Apophis, is rising. 

The Throne of Fire by Rick Riodan