The Demon World. The Smoke Thieves Book 2

After narrowly escaping the fall of Rossarb, Princess Catherine leads a rag-tag group of survivors into the barren wasteland of the Northern Plateau.
With the Brigantine army snapping at their heels, Edyon and Ambrose become separated from the group, while demon hunter Tash leads Catherine and March to an unlikely refuge - the hidden tunnels of the demon world itself. They soon find that the tunnels hold their own dangers and, while Tash travels deeper, hoping to learn more about their mysteriou