Breath (Riders of the Apocalypse, Book 4) by Jackie Morse Kessler
Release Date: April 16th, 2013
Length: 336 pages
Synopsis from Goodreads.com:
Before the first living thing drew its first gasping breath, he was there. He has watched humanity for millennia. And he has finally decided that humanity is not worth the price he has paid time and again. When Death himself gives up on life, a teenager named Xander Atwood is the world’s only hope. But Xander bears a secret, one that may bring about the end of everything.
This heart-pounding final installment of the Riders of the Apocalypse series looks at the value of life, the strength of love, and how a small voice can change everything . . . forever.