ISBN-13: 9781541373327 / Angielski / Miękka / 2017 / 98 str.
Two teenage brothers are drawn in to the battle of another world being played out all around them. It is a conflict of good versus evil that spreads disease through the human race and which only the boys can see. The enemy's leader can disguise himself as human and must be captured by the brothers before a small town outbreak becomes a worldwide epidemic.