The Captive's War

A space opera trilogy by James S. A. Corey, the authors of The Expanse. The Carryx are an empire that grows by conquering other species and keeping each one only as long as it proves useful. Humanity is the latest captive, and the series follows the people taken from their home world as they try to survive inside that empire and find a way to resist it. The novels are joined by short digital novellas set in the same universe, beginning with Livesuit.