Steel Rose

Sometimes they come back. At least the Kryszka aliens do. Their leader captures humans and injects a chemical to turn them into zombies. Yeron escapes their underground colony to practice human medicine, but most people fear him. Alexis, his patient, is afraid, too...until his seductive attentions profoundly arouse her. He develops a drug to control her pain from disabling arthritis, but her weakness prohibits her from handling most weapons. The Kryszka soldiers and zombies who break into the hospital are hungry. So very hungry. How will she fight them?
Steel Rose is the prequel to When Blood Reigns