Books like The Ghost and the Darkness Volume 2

The Ghost and the Darkness Vol. 2 continues with Reaver and Elish desperately trying to find Killian and Jade. Forced to work together, they scour the northern greywastes for clues of their whereabouts.Though finding the two boys isn't as simple as following a trail. Something happened to them that no one expected. And as Reaver and Elish search the greywastes they both come to the grim realization... that they have been betrayed.