The Eyeless, Book 2: The Apprentice by Mark Mulle. $2.99 from Smashwords.com
Things have been very peaceful since Steve and Alex encounter with the King Zombie, apart from the occasional zombie raids on the village. Steve and Alex have even taken on an apprentice from the village; a boy named Jack. But the man with no eyes is lurking close by, and he has taken Jack to a dimension most evil. Alex and Steve now need to find the their young friend and bring him back!