When I signed the contracts to write a book about the Battle of Britain, my first thought was that it would be easy to research. Plenty of other books about the topic. Lots of museum displays. Actual BoB aircraft still flying after all these years, as I knew from a previous visit to the Imperial War Museum's Duxford annex. But after reading Len Deighton's Fighter to better understand the story arc and begin to contemplate a way to tell the story from a unique perspective I realized I had a problem: too much information.