Eden by Tony Monchinski
When the world is overrun by flesh-eating zombies, the surviving humans hold up and hold on as best they can. Inside the fortified compound of Eden in Queens, New York, a man named Harris–infected by zombies–races against time to secure justice before his demise. In a world where the dead mass patiently beyond the walls of humanity’s last redoubt, the danger and deceit within far surpasses any evil without.
Available at Amazon.