4.5 stars 
 Really had a lot of fun with this one. I watched 20,000 Leagues Under the Sea over and over again as a kid, so I have a softspot for stories about mysterious submarines. This one is stuck in the bayou, not having adventures on the ocean, but it still was a very fun ride. 
 Once again Priest plays with the history books (and I love every second). Based off of Hunley's real-life submarine attempts for the Confederacy, this one has Andan Cly, semi-reformed pirate, who comes to New Orleans to get supplies for Seattle and to do a job for his former love, Josephine Early. Early is a Union spy and is trying to get the last working submarine into the hands of the Federals. There's also more zombies, action, gadgets (I love the detail on the cars and boats used in NO), and as always fantastic characters who would fit so well into any Western (minus the zombies and alternate history). 
 Several faces from previous books make an appearance and it's nice to see progression on some of the side stories. Can't wait for what happens next! 
 This one might be my favorite of the series to date. 
 [I won an advance readers copy from Goodreads First Reads.]