Nightbreaker

Fifteen years ago, The Vanishing thrust Manhattan into darkness, forever changing the City That Never Sleeps. Aboveground, resilient New Yorkers have adapted by clinging to the vestiges of their cosmopolitan lives. Below the streets—well, you never go underground unless you have a death wish.

Or unless you’re Rei Reynolds.

By day, Rei attends the an elite New York prep school, but by cover of night, she's is a self-initiated warrior with a knack for hunting Deathlings, the deadly creatures that haunt Manhattan’s subway tunnels and blood-soaked streets at night. All Rei wants is to avenge her parents, who were slaughtered years ago by the nightmarish monsters.

The Tournament is the only path to the career Rei has always dreamed of—becoming a Maverick, the city's elite Deathling-killing force. Winning should be a breeze, but the one potential problem is fellow competitor Kieran Cross, Rei’s infuriating ex with whom she shares a bitter history. But as the Tournament progresses—and the cutthroat betrayals mount—everything Rei believed about who she can and cannot trust is called into question. She soon becomes the target of everyone who wants to keep the city's ruling class in power, as well as those who seek to bring it down.

In other words, Rei is positively and completely screwed. 

Coco Ma's exhilarating fantasy blends thrills and chills for an immersive read featuring the snarky, postapocalyptic heroine we all hope to be.