I am assuming that this is the book previously titled CAPTIVATED (?) but now published in the USA as NEVERLAND. I am reading this book right now although it is called NEVERLAND --still the same author. It is interesting to hear about the pre-Barrie lives of the people involved, especially the Du Maurier's. While I am not finished with the book yet, the author does seem to leap to conclusions by stressing the facts which support his conclusions, and ignoring those which do not. The example that comes to mind immediately is his conclusion that Michael's death was a suicide. He points to the fact that this was a little swimming hole with very calm waters,("One has to wonder what, in a non-tidal pool, could lead to two fit lads drowning? A man bore witness that the pool had been glassy calm." But he ignores the fact that this very swimming hole was the setting for several other drowning victims--wasn't there already some sort of marker at the pool when Michael drowned?
He does point to the section of THE LITTLE WHITE BIRD, where little David has his "sleepover", as the "evidence" where Barrie supporters throw their arms up in exasperation; in other words, How do they explain THIS? And the descriptions of the man undressing David and how exquisite he looked and David crawling into bed with him...well, it is a bit "uncomfortable".
Still, a fascinating read so far. I will comment further when I have actually read the whole thing!