DEADLY TO THE LAST DROP .

Ninety-seven percent of the population is dead. And the killer rain keeps falling. Ruby's not sure she can make it on her own much longer. So when a chance encounter leads her to a camp with the last boy she may ever kiss (it's not easy to date during an apocalypse), Ruby gratefully accepts the army's protection. But safety comes with a price: If Ruby wants to stay, she must keep her eyes-and her mouth-shut.

Except Ruby stumbles across a secret she can't possibly keep. Horrified, she flips out and fights back-only to make the most shocking discovery of all...