https://www.penguinrandomhouse.com/books/557830/darkness-visible-by-mike-carey-and-arvind-ethan-david-brendan-cahill/
Darkness Visible by Mike Carey, Arvind Ethan David: 9781631409790 | PenguinRandomHouse.com: Books
When the demons came, humanity reluctantly learned to share the world with another sentient race. Sixty years later, this uneasy co-existence has spawned...
arvind ethan daviddarkness visiblemike carey