City of the Dead: A Maximum Ride Novel: (Hawk 2) by James Patterson
'Fights and flights are non-stop' USA Today
For Hawk, being a hero weighs heavily on her wings.
In the City of the Dead, life happens in the shadows. That's why a war is brewing against an enemy no one can see.
Hawk and Maximum Ride never back down from a conflict, but as the dead begin to outnumber the living, they'll need to work together now more than ever.