For fans of Percy Jackson and the Olympians , the thrilling conclusion to The Blackwell Pages, written by New York Times bestselling YA authors, K.L. Armstrong and M.A. Marr. Thirteen-year-olds Matt, Laurie, and Fen have beaten near-impossible odds to assemble their fellow descendants of the Norse Gods and complete epic quests. Their biggest challenge lies ahead: battling the fierce monsters working to bring about the apocalypse. But when they learn...