The majority of this read like a supernatural newspaper and it worked really well giving flash scenes of the action of them catching, subduing and destroying the various types of demons that have broke surface in to this dimension from their own dark dwellings. I just have Sam and Dean in my head the whole time, using Castiel's dagger destroying each entity as they vaporize into nothing. Even how you describe the black liquid spilling scene is very Supernatural-esque and it's so great to see the parallels in this novel of yours. It's like reading an extension of the the last season or the beginning of a new one.
I see Anna and Josh possibly becoming closer to one another at the rate in which they comfort and aid each other with their companionship. The back and forth banter amongst the brothers is always well done, but it's high time we see what their father is all about. I hope Anna makes it smoothly beneath his harsh, no nonsense having radar. Great chapter my friend...now I have binge read to the point where I have to wait like everyone else. How truly saddening. I knew I was moving too fast, this need for the virtue of patience was indeed inevitable.