The Coldest Girl in Coldtown by Holly Black

Tana lives in a world where walled cities called Coldtowns exist. In them, quarantined monsters and humans mingle in a decadently bloody mix of predator and prey. The only problem is, once you pass through Coldtown’s gates, you can never leave.

One morning, after a perfectly ordinary party, Tana wakes up surrounded by corpses. The only other survivors of this massacre are her exasperatingly endearing ex-boyfriend, infected and on the edge… Read more.