Marie Lu

In a dark future, when North America has split into two warring nations, fifteen-year-olds Day, a famous criminal, and prodigy June, the brilliant soldier hired to capture him, discover that they have a common enemy.

"June and Day have sacrificed so much for the people of the Republic--and each other--and now their country is on the brink of a new existence. Just when a peace treaty is imminent, a plague outbreak causes panic in the Colonies, and war threatens the Republic's border cities"--