Theater of Spies is SM Stirling’s second book in his alt-history Black Chamber series (change point: Howard Taft has a heart attack just in time for Teddy Roosevelt to win the 1912 election instead of vicious racist and would-be totalitarian Woodrow Wilson*). It’s a nice, taut spy thriller, full of in-jokes and historical references and the nagging feeling that the USA in that universe is heading down a somewhat darker road than they realize. It’s fun to watch, mind you, mostly because it’s not my world so by definition it’s an adventure. Check out the series.
*I’m kind of making it a point to refer to the jackwagon that way from now on.