The Kill Order (The Maze Runner series: Prequel)

Mark shivered with cold, something he hadn’t done in a long time.
He’d just woken up, the first traces of dawn leaking through the cracks of the stacked logs that made up the wall of his small hut. He almost never used his blanket. He was proud of it – it was made from the hide of a giant elk he’d killed just two months ago – but when he did use it, it was for the comfort of the blanket itself, not so much for warmth. They lived in a world ravaged by heat, after all. But maybe this was a sign of change; he actually felt a little chilled by the morning air seeping through those same cracks as the light. He pulled the furry hide up to his chin and turned to lie on his back, belting out a yawn for the ages.
Alec was still asleep in the bunk on the other side of the hut – all of four feet away – and snoring up a storm. The older man was gruff, a hardened former soldier who rarely smiled. And when he did, it usually had something to do with rumbling gas pains in his stomach. But Alec had a heart of gold.