This 3rd volume completes the first main story arc for the series, resolving the cliffhanging end of Vol 2 (Issues #10). 

Much of this resolution, somewhat predictable, was unnecessary conflict to begin with. In other words, the sheer irrationality of the human antagonists made them an implausible and unsatisfying adversary for Erica's story; this is especially true when the story was escalating on its own with the monsters themselves. There was plenty of weighty story for Erica and allies to deal with in that small town. In the end, the resolution for the monster-side was a quick one, and the one with her human antagonists was resolved outside of the main action.

That said, the human story resolution of this series of issues was original and provocative, making it the highlight of the 3 volumes so far. I totally bought it, as desperate and classically 'awe-full' as it was. 

This is a potentially powerful series--as I would expect from Tynion--but as it continues, I am hoping for more of this kind of imaginative storytelling than trope-heavy retreads.