Gill has written a very enjoyable and reader-friendly survey of Berlin between the two World Wars here. A lot of the names from Berlin's cultural, political, scientific and sociological history will be unfamiliar to modern readers, but Gill's style makes it all go down easy. He is humble enough to acknowledge that his one book can only really skate the surface of Berlin's rich history. I am not knowledgeable enough about Berlin's history to comment as critically as someone like Randall Schroeder of Augustana College (Illinois, USA), namely that Gill slips on the facts sometimes, where Schroeder cites an example that Gill "cites the controversy about the republic's flag but describes the flag backward". However, with that caveat, this still makes a good introduction for those interested in the city or who love the city, as I do.