Dark Breakers, book 3: Desdemona and the Deep
C. S. E. Cooney2019

In Desdemona and the Deep, the spoiled daughter of a rich mining family must retrieve the tithe of men her father promised to the world below. On the surface, her world is rife with industrial pollution that ruins the health of poor factory workers while the idle rich indulge themselves in unheard-of luxury. Below are goblins, mysterious kingdoms, and an entirely different hierarchy.

Titre original : Dark Breakers, book 3: Desdemona and the Deep (2019)