Killadelphia: Burn Baby Burn (Vol 2) is a great followup. It gets into a lot of back story of all the key characters introduced, big and small, in the first volume.  You feel sorry for these folks and see their motivations behind their current actions.  It does skip back and forth quite a bit between these stories so I had to pay close attention so I wasn't lost.  I like you have a woman trying to take charge with Abigail.  Not saying I liked her plan, but girl power.  Book leaves in a cliff hanger, so definitely find the other volumes quick.