Really well done. Benny is a strong male protagonist, and his brother Tom emerges as a tour-de-force character throughout the book. 
 The book does what AMC's "The Walking Dead" does masterfully--makes the idea of a zombie apocalypse about so much more than flesh-eating zombies. It's as much about the survivors, and how their lives are forever altered by their choices. Excellent story, fast-paced. 
 On the back, Nancy Holder's comment calls this "George Romero meets Catcher in the Rye." I absolutely see it. I get it. And it's really a fantastic piece of writing.