Understanding the Invisible Shakespeare represents Brenda James' third book on Sir Henry Neville. Her new research has led to further evidence for his authorship and delves into the world of the Neville Knights and their societies. This book includes newly-presented letters from Sir Henry while imprisoned in the Tower of London, a detailed and daring Political Treatise by Sir Henry Neville and analyses both its vocabulary and sentiments, demonstrating how they are parallel to those found in the Shakespeare works. Another feature is an extended analysis of Sonnet 121 contributed by a prominent attorney. He tellingly concludes that when its text is subjected to a series of recognised analytical techniques employed in legal circles, then its author can only be someone bearing the name NEVILLE. When all this, and more, appears alongside the sleuthing of more tantalising clues in the plays themselves then this becomes a 'must have' book for all authorship detectives.