Personally I think that the best book on
Mick Mannock is 'King Of The Air Fighters", by
Taffy Jones (and a very treasured possession

).
You can say what you like about Taffy's "lack of objectivity/occassional bloopers" on the subject of Mick. He has passion for the subject, he brings alive the feeling of those far off days that modern writers just can't capture. When you read the book you gain a sense of knowing Mick, feel his hatred of the Germans, his determination to keep his men alive if at all possible, his tiredness and ultimatley his sense of doom.
Norman Franks is an able and meticulous historian, he presents facts and details in a clear logical manner and covers the 'events' accurately. But like most modern historians/writers (to my mind) he lacks empathy - he lacks passion. I have no doubt that the new book will be an accurate portrayal of events surrounding Micks life and death.
But if you want to know the real Mick Mannock, search for a copy of Jones biography.