A dystopian thriller with a touch of romance

In the fast-paced Legend by Marie Lu the action never stops!  The story takes place in futuristic Los Angeles - there's no "United States" any more, just an ending war between the Republic and the Colonies - and it's told in alternating chapters by the two main characters, both 15 years old.  Day is the Republic's most wanted criminal; he's trying desperately to find a cure for the plague that has infected his little brother. June is brilliant and wealthy, heading for a prestigious career in the Republic's military.  When June's brother is killed, Day is the prime suspect - she's out to get him, but when their paths finally cross...a lot changes.  Besides falling for each other, they learn something really nasty that the Republic government is up to.  How can they put a stop to it, when Day is captured and his execution date is set?  Younger middle schoolers may not like the violence, but older students (and, yes, high school kids), especially fans of "The Hunger Games"-type books, won't be able to put this one down.