Whoa! That was a heck of cliff-hanger to end on. That demon is a scary sonofabitch.

I really like the sense of urgency you create, with John rushing to help his boys but being too far away, and all the kids dying and Dean so desperate to stop it that he's driven to do things he knows are a bad idea. The plot tension flows from the character tension, and you totally have me on the edge of my seat as a result.