During A-level history, I learned lots about World War II from the British side and emerged with a fair grasp on what happened in Germany throughout the 1930s to precipitate war.
But although the was in Europe was familiar territory, I had no inkling of what was going on in South America at that time. One of the many things I loved about this book is that, through the adventures of Carl von Menen, you see what is happening in Berlin and Buenos Aires. Every detail in the historical background rang true.
Add in the well-written characters and clever plot, and you end up with a cracking good read.