Vertical City, A Zombie Thriller Part 3 by George S. Mahaffey, Jr. is the continuation of Books 1 & 2.
I found it fascinating, read it in one sitting & still wanted more. Wyatt develops as an interesting character. I care about what has been happening to him. He's involved in some near lethal escapades.
This portion of the ongoing series is a pulse-pounding, suspense-filled book.
I gave it five stars in spite of a need for editing for incorrect grammar & homonyms.
Link to purchase: https://www.amazon.com/gp/product/B016VROU9W