The serpent's shadow : the graphic novel / Rick Riordan ; adapted and illustrated by Orpheus Collar ; lettered by Chris Dickey ; color assists by Stephanie Brown, Aladdin Collar, [and] Cam Floyd.
When Apophis, the chaos snake, threatens to plunge the world into eternal darkness, siblings Carter and Sade Kane plan to use an ancient spell to destroy the snake, but first must rely on the murderous ghost of a powerful magician.