Now, as an aside, since it's not pure SF (for which there's the other thread), I've finished
Theater of Spies. It's the 2nd book in Stirling's new series now that he's finally decided to end the
Emberverse series (for which I am simultaneously grateful and slightly disappointed).
It's basically the adventure of James Bond, if James Bond was a bisexual latina superspy fighting the Germans during WW1 in an alternate history dominated by ... what would you call it? zep-punk? And with Tesla himself as Q. In the hands of anyone else, it would probably be a disaster, but Stirling can do the ludicrous premise justice.
The Theater of Spies brings back mostly the same cast of characters from book 1, namely Luz O'Malley, her GF technological wizard Ciara Whelan, arch-Nemesis Horst and a good supporting cast. Set in a WW1 setting, with Germany the technological wizard with WMD and radar and all that vs the the USA economical giant, it has his capers, hot dirigible pursuits, daring rescues, and even a Sergeant Schultz that you can very obviously picture as That Sergeant Schultz (probably not a coincidence). Plus bonus gifts (seriously, how would you behave if Nicholas Tesla himself sent you a slide rule as an appreciation gift).
It's a bit less of a wonder than the first novel, since most of the surprise and discovery of the setting is now gone, but it remains a good read. And, of course, we're going to see more of the clashing between Luz and Imperial Germany's spies.
PS: There's a point where you realize exactly how alt-America is slowly shaping... not spoiling. But that's where you get the difference between Stirling's subtlety and Turtledove when it comes to alt-history.