Sadie and Carter Kane have awoken Apophis, the chaos serpent. They have to defeat him in a very small amount of time before he swallows the sun and plunges the world into eternal darkness allowing chaos to rule everything. But they have a hunch. After retrieving the shadow box from the Dallas Museum, they believe they could use it to execrate Apophis. In this book, the shadow is part of ones' soul. But there's only one guy who knows this magic.....Sethe, a murderous, back-stabbing, cruel, lying ghost. Will they destroy Apophis in time? It was one of the best books I've read. Adventurous, funny, exciting and fantasy, my favorite combo.