I'm looking to read a good book about Nazi Germany. More specifically about Karl Mengele and Auschwitz or even Dachau, but more about Karl and Auschwitz. If anybody has any recommendations, that would be great. What I’m looking for is a book that reads more like a text book instead of telling a personal story. If anybody has (and I know some of you have) read Fast Food Nation, that is the style I'm looking for.

Thank-You in advance.