"...these munchables occur only in the Bootherbroiwth family of MSS., Bb - Cod IV, Pap II, Brek XI, LunIII, Dinn XVII, Sup XXX, Fullup M D C X C: the scholiast has hungrily misheard a deadman's toller as a muffinbell."
Wow. Okay, it included the letters "M" "D" and "C" for Mark David Chapman along with other Roman numberals and it had the word "deadman". I'm convinced, though I can't see at all why the plenty-important-on-his-own-thank-you-very-much Irish author would have had anything to do with this.
But, as tempting as it is to detail every flaw in this book (that would take another book), this is just a review. The first half is fun much as reading through the "Paul is dead" rumors is, whereas the second half is dense with numerology, Finnegans Wake, and some really infuriating passages on the death itself. So I can't truthfully recommend this for anyone. If you are a Beatles fan, it will be somewhat entertaining until it reaches its real purpose and becomes unreadable. If you like the idea as a sort of legitimate conspiracy theory, then I can only guess that you'll get what you want.
For more, you can watch these three YouTube videos that combine a disorganized-sounding radio show with Niezgoda as its guest with the relevant pictures to what they're talking about. You'll likely learn more than you would reading the book.