Descent by Robert Kirkman
Inspired by Robert Kirkman's comic book and television sensation, Descent is the fifth novel in Robert Kirkman's The Walking Dead series; a gripping spin-off series by Jay Bonansinga, focusing on the character of Lilly Caul as she and the citizens of Woodbury attempt to survive the zombie apocalypse.
Lilly Caul and a small ragtag band of survivors are determined to overcome their traumatic past.
Still recovering from its troublesome history, the town of Woodbury, Georgia, becomes an oasis of safety amidst the plague of the walking dead - a town reborn in the wake of its former tyrannical leader, Philip Blake, aka The Governor.
Lilly and the beleaguered townspeople save themselves from a vast stampede of hungry walkers, by joining forces with a mysterious religious sect fresh from the wilderness. Led by an enigmatic preacher named Jeremiah, this rogue church-group seems tailor-made for the people of Woodbury and Lilly's dream of a democratic, family-friendly future.
But Jeremiah and his followers harbour a dark secret, and in a stunning and horrifying finale, it is solely up to Lilly to cleanse the town once and for all of its poisonous fate.