Get it while it lasts! This Power Pack of Power Worlds books contains both currently existing titles, "Souls of Darkness" and "Atomic!".
Souls of Darkness Synopsis: "Join Maya Hunter, a Souls of Darkness fan just like you, as she braves demons and the undead in a relentless search for her little sister. She'll face hardship, gain friends, and grow in power as she explores SOULS OF DARKNESS!!"
Atomic! Synopsis: "Boyd Allen is just your average Egg dweller, living in the post apocalyptic world of tomorrow. But when a top secret mission sends him out into the wastes, he'll have to contend with snakes, mutaniacs, sick pups, class issues, more snakes, RAZOR SKULLS, and the scariest thing of all: snakes. I mean, self reflection. Read all about it in Atomic!, the 2nd Power Worlds novel from F.X. Butterfield."