The third and final volume of a fascinating, yet slow, series. The author takes a hard, and presumably honest, look at the plausible results of a Yellowstone eruption and the gradual decline of a nation directly affected by it. He looks through the eyes of believable characters, a couple of whom are writers who give the reader an idea of the trials and tribulations faced by those pursuing that craft. Plenty of disaster stories paint pictures of rapid collapse of government, economy, etc., and while that's plausible under certain scenarios, the gradual gasping portrayed here is arguably more realistic, even if less dramatic.
I'm not sure I can say I enjoyed the series as much as I'd hoped, however. The pacing was slow, which I could handle once I reminded myself that this is a drama, and not action/adventure--and it helped that I found the audiobook at the library. The characters, while believable, didn't strike me as sympathetic, and it often felt like the author was using them merely as a way to talk about the effects of a supervolcano eruption using a narrative. While I want to say I trust Turtledove to do his research, certain elements of the worldbuilding didn't ring true to me--for example, gas shortages, power outages, and steep price increases on pretty much everything.