The Coldest Girl in Coldtown by Holly Black
Tana’s world is inhabited by both humans and vampires, living in an uneasy and delicate balance. The vampires are quarantined, along with some unlucky human inhabitants, in old, derelict cities called Coldtowns. Most other people live in relative safety outside the walls. But life can change suddenly, and Tana finds herself on the run after a party that ends in bloodshed. Riveting and intriguing, you don’t want to miss this tale that casts a new light on human and vampire coexistence.