The Nightcrawler by P.A. Sheppard

The problem with the end of the world is that it’s a gradual process. It keeps getting worse. It tests you until you break, just to see if you can put yourself back together. Caz and her father do what they must to survive the fall of humanity. Hunting when they can, and scavenging supplies from the derelict shells of a deserted city, they rely on each other to make it to the end of each day.The end of each day. A time when darkness falls and the monsters responsible for the collapse of society emerge to hunt.