I don't normally review books because after all,one man's meat is another mans poison.This is more by way of a warning to any fans of I Am Pilgrim who may be hoping this book is more of the same (which I was).It isn't.lt is a disjointed tale which expects the reader to believe the unbelievable.It belongs on the Sci Fi shelf.An invisible giant sub and one protagonist who morfs into something akin to The Incredible hulk are but a couple of instances of make believe we are expected to swallow.Don't waste time on this book. As one previous reviewer said 'it's drivel'. Sadly,I totally agree. I can recommend a good spy thriller by a chap called David McCloskey called Damascus Station.Well worth a go !