Linger

Linger by Maggie Stiefvater

This is book two of the Mercy Falls trilogy. The first is Shiver. Considered young adult and written with more maturity than most in that category.

World War Z

The Zombie Apocalypse is upon us. A pandemic that destroys most of the human race. This is told as recollections from survivors around the world. It's easy to read and, at times, chilling.