Roses of Blood on Barbwire Vines (2007)
by D.L. Snell
Fiction

Synopsis:
As zombies invade a barricaded apartment building, the vampire inhabitants must protect their human livestock. Shade, the vampire monarch, defends her late father's kingdom, but Frost, Shade's general, convinces his brethren to migrate to an island, where they can breed and hunt humans. In their path stands a legion of corpses, just now evolving into something far more lethal, something with tentacles--and that's just the beginning

Original Publishing: Permuted Press, 2007, ISBN 0978970713