Dark Age - more bloodshed in the Red Rising series.
The war has spread and it now consumes the entire solar system. Blood and violence are pervasive as the fledgling Republic tries to hang against those who oppose it. Many want to return to the old color based society while others view this conflict as an opportunity to rise to power, so there is no shortage of combatants available. Like the last book, Iron Gold, this story is told from the perspectives of the same PoV characters (plus Mustang this time) and each of them experiences this conflict from a different location within the solar system. With such a complicated set of battles it will take you some time to get your bearings, especially if it has been a while since you read the last book, but once you get everything sorted out this is another wild ride in a series that remains surprisingly compelling.
The body count rises as humanity tries to find some sort of equilibrium in the aftermath of Darrow's rebellion, and it is his storyline that remains the most compelling of the bunch. The other PoV characters all play key roles in the conflict and some new characters also rise to prominence, including Darrow's son Pax who grows into an interesting character in his own right. Despite a number of big moments that have unalterable impact to some of the main characters, this book is not without some Deus Ex Machina which can be a little unsatisfying. However, if you are a fan of the series then you should definitely pick this one up but don't expect much to be resolved in the big picture. The individual battles are tense and exciting, but they do not bring an end to the overall war, so this series will be moving on to book 6.
Once again it is an ensemble cast of narrators for the audiobook version with each PoV character being voiced by a different person. I found them all to be excellent with Tim Gerard Reynolds remaining the best of the bunch.