Mulhall's book can at times be a little tough to stay engaged with, vast swaths of the text seem dedicated to thrilling the reader with tales of infiltration and the adrenaline high that comes from operating in such a line of work, while these books sometimes do manage to be engaging more often than not they do little to add to the main work of the text: documenting the rising tide of fascism on a global scale, fortunately the book does succeed in illustrating this point even if it does seem at odds with it's own frame structure at times.
When Mulhall is describing the recent history of fascist movements, he has a skill (no doubt through his years undercover exposing organisations) of linking groups and painting a wider picture of the very real threat that has been expanding in the last decade of so. His efficiency with communicating a timeline of events, their effects and the causes, leads to much to be praised, and as he paints the more international elements of the image, it's interesting to see the way these seemingly distinct stories weave into one another, be that through recurring ideologies or through recurring characters and fears. This first-hand experience seems better communicated when discussing the bigger picture than in the more personal interjections throughout the text strangely.
Very readable, and very thorough, a clear picture of a growing issue explained in an efficiently communicated way. This is a good book. I'm also sure there will be people that ARE thrilled by the tales of undercover work, for me however I found they more often than not distracted from the point. Which is a shame but not one that puts a death nell on the bits of this book that DO Work.