Mockingjay: the Hunger Games #3 by Suzanne Collins

"Katniss Everdeen has survived the Hunger Games twice. But she's still not safe. A revolution is unfolding, and everyone, it seems, has had a hand in the carefully laid plans--everyone except Katniss. And yet she must play the most vital part in the final battle. Katniss must become their Mockingjay - the symbol of rebellion - no matter what the personal cost." -- Publisher.