The Man with the Iron Heart is the latest book from author Harry Turtledove. Harry Turtledove is the master of “alternate history”, a rather niche genre, but one that I find fascinating. Those who are fans of Turtledove and the genre in general should be able to jump right into this book and enjoy it. Those who are new to the genre might need a bit of an introduction.
The basic premise of most alternate history novels is that somewhere, at some point in our history something changed, and like the butterfly flapping its wings the effects reverberate across history, changing its course. These changes are called “points of departure” (PODs) in alternate history terminology, and in The Man with the Iron Heart the point of departure is the assassination of Reinhard Heydrich a Nazi SS officer who in our timeline was killed by Czech assassins in 1942 but in the book survives as a result of a machine gun jam.