Hi Brian,
I've not read the book, so am not really in a position to offer an opinion on it. It doesn't sound like the kind of history book I'm interested in. It's all well and good to come up with a plausible theory, but you need more than secondary sources and 50 year old memories to prove it.
Neil Page and Larry deZeng both offer solid evidence about the final flights from Berlin, based on logbooks and the work of credible German researchers. I'm not sure that Dunstan and Williams have done so. Their story of the South African-born "128 victory ace" and K.G. 200 member Peter Erich Baumgart (with an SS rank to boot!) should be enough of a warning to any discerning reader that their research is not too thorough.
I'd also recommend reading Larry deZeng's posts in this Axis History Forum thread started by Gerrard Williams:
http://forum.axishistory.com/viewtop...?f=49&t=167239. Based on the excellent research of Kössler, Ott and Schlaug, who have spent decades researching
Luftwaffe transport operations, there is no evidence whatsoever for transport flights from Berlin after the night of 25/26 April, so I'm not sure how Hitler escaped from Berlin in a Ju 52 two nights later.
Without reading the book I can't offer much more of an opinion, but you never know, perhaps Hitler did live in obscurity in Argentina with his wife and two children to the age of 73 ...
Cheers,
Andrew A.
Air War Publications -
www.airwarpublications.com