We actually waited with the review of this book, while it's written in the French language only!  As the author is a long time member of the magazine I suggested him to find a publisher that can release this brilliant book in the English language.  Now this has finally happened it will be published soon.  The book is as detailed as you can get, it's the best result about this particular subject .  For Americans the story usually begins on 7 February 1964.  Anytime when I'm talking about the Hamburg period with an American, their lack of knowledge about the band's pre-64 story surprises me!  You probably all are familiar with Gottfridssons fine book about the subject, published a few years back.  This was the first professional attempt to solve some of the Beatles' secrets.  He frequently is quoted inside this book, just as our own series published in Beatles Unlimited about the Hamburg '62 tapes.  To enable you to find and compare information focussed to the 1960-1962 period of the group, this book has one of the biggest indexes and appendixes ever published.  It absolutely is vital to find your way in this matter.  Even for the die-hard fans the given information is overwhelming and is at the same time the ultimate proof that you've obtained a very special book!  The only comment I have is that the contents is sometimes difficult to grasp due to the overwhelming number of facts!  The author does not pretend that he is telling the truth.  He simply gathered together all found information and sources!  (Very wise!)  It is up to you to make this conclusion.  His close contact with Tony Sheridan and people familiar with the subject, surfaced lots of facts that were not known or not common to beatlefans.  If you combine all those details, you will be close to the truth of a story that has so many versions!  It was a privilege for me to review this superb book, as even I found an answer to questions I had in mind for so many years.  Well done mon ami!