Escape From 31/Atlas

When a prison transport riding the icy tail of a wandering comet tears through Earth's atmosphere, one fugitive survives the fall.
Krass is not a monster, though the frightened witnesses swear he looks like one. Hunted across unfamiliar mountains by a relentless android tracker known only as SCAR, the alien refugee is running out of time, strength, and places to hide. Every fire he lights, every track he leaves in the dirt, brings the machine closer.

Enter Ranger Tommy Crow Foot.
What begins as a routine investigation into smoke reports and strange animal kills quickly turns into something far bigger, and far more dangerous. Faced with a silent mechanical hunter and a desperate being who once spared his life, Tommy must decide where the law ends and justice begins.
Outmatched, outgunned, and cut off from help, an unlikely alliance forms in the high country. But SCAR does not tire. It does not reason. And it does not stop.
As the mountains become a battlefield of instinct versus programming, one truth becomes clear:
Some fugitives aren't running from justice.
They're running for their freedom.
Escape From 31/Atlas is a gripping sci-fi survival thriller about trust, pursuit, and the courage it takes to stand between the hunted and the hunter.