Nights dawn trilogy

The Confederation is starting to collapse politically and economically, allowing the "possessed" to infiltrate more worlds. Quinn Dexter is loose on Earth, destroying the giant arcologies one at a time. As Louise Kavanagh tries to track him down, she manages to acquire some strange and powerful allies whose goal doesn't quite match her own. The campaign to liberate Mortonridge from the possessed degenerates into a horrendous land battle, the...