Arena (Just Cause Universe Book 12)
"The enemy of my enemy . . ."
Humanity has spent decades calling into the stars, seeking assurances that we are not alone in the galaxy. After many years of silence, someone has answered. The Hind came from afar, not to extend the hand of friendship, but the axe of conquest.
The Hind drop an impenetrable force field over New York City, creating a cage where their shock troops will battle a handful of superheroes. They intend to conquer, but threaten annihilation if humanity doesn't surrender.