Monsters of Verity  is an upcoming series by Victoria Schwab. It tells the story of two teens in a broken world, where violent acts start breeding actual monsters. It is a two person POV with Kate Harker and August Flynn.
This Savage Song is the first book in the Monsters of Verity series. This Savage Song tells the story of two teens in a broken world, where violent acts start breeding actual monsters: some are shadows with teeth that feed on flesh and bone (Corsai); some are corpses that feed on blood (Malchai); and some can pass for human (Sunai)--those rare creatures feed on souls.
It's the story of Kate Harker, the only daughter of a crime boss, and August Flynn, the son of a man trying to hold his city together. Kate is a human who wants to be a monster, and August a monster who wishes he were human.
Our Dark Duet
The second book of Monsters of Verity is expected to publish in 2017.