Julia Keller’s 2017 The Dark Intercept is a standalone young-adult SF dystopia.
High above the Earth’s surface, the six floating cities that comprise New Earth offer everything that the war-torn ground level cannot: prosperity, security, and peace. The Intercept is the primary weapon used to keep the chaos of the old world at bay. It reduces any miscreant to a whimpering heap, using the miscreant’s own weaponized emotions.
Sixteen year old Violet Crowley accepts the new world order without question. After all, her father Ogden created it.
Her world is about to fall apart.