Oh dear, it's all gone a bit wrong.
Generally anything involving the Borg is worth reading or watching, but this book is the exception. All this book amounts to is another retread of the "Borg flies to earth and try and destroy humanity" storyline.
And guess what? The Enterprise is the only ship than can stop them and only Picard has the ability in the whole of Starfleet to think of an imaginative solution. I can see the good captain in his ready room thinking: "Hmm, the pesky Borg are back and want to destroy the Earth? Gosh, it's almost like that Romulan chap a year ago with his big ship that exploded and killed Data. First time I made the Borg go to sleep - that won't work again. Shooting the plasma tanks thing worked well against the queen, but would she accept an invite to engineering for a cup of Earl Gray? Probably not. Ah, what about the Guardian of forever? Nah too silly. Hang on, wasn't there a big cone shaped alien ship type thing that was found by Kirk and it was nearly invulnerable, and was built to kill the Borg? Perfect! Let's go and get it and come to the rescue again. Hooray!"
The author then slips in some continuity stuff by referring to past events from at least a couple of old TNG novels. Throw in a few untypical crew members to replace data and Riker. Lastly, but definitely not least, there is a rather bizarre cameo by Mr Spock who has prepared a long list of obtuse, unhelpful and annoyingly smug one liners.
This book is a really lazy effort. It was dull; some of the stuff the Borg do is just too farfetched. I only finished the book out of curiosity to see what sort of ending was waiting for me. Answer - a really bad one. Avoid.