City of the Invaders — Sarah Scheele

Katia Fierten, a weapons expert masquerading as a harmless civilian, uncovers a dangerous family secret that thrusts her and her brother into the treacherous political landscape of their city. As they become entangled with the ruling mafia, they participate in a theater production that becomes center stage for a power struggle that will change their lives forever. If you enjoyed books like The Hunger Games or Divergent, you won't want to miss City of the Invaders and its sequels, Consuela and Celestine Princess.