This what Ivan Fraser who originally worked with Icke on "The Biggest Secret" said about the book:

"Does anybody have any direct proof of any of the wild claims being made? For example, if Mutwa has captured greys and eaten them, then are there any remains, photographs or corroborating witnesses to present? For, until some actual evidence of this story appears, all we have is a very good draft of a science fiction novel that still needs careful work to iron out the inconsistencies in the plot."

[link to loveforlife.com.au]