This book solves the greatest mystery of the Beatles by describing and evaluating a record 166 Paul Is Dead clues that appeared after the Revolver album and before the Let It Be album. Why do so many people in the 21st Century still think that Paul McCartney died in 1966? The Beatles always denied putting "Paul is Dead" clues in their music or their artwork for albums. Yet close examination, sometimes including playing music backwards and using mirrors to look at artwork, shows up to 200 apparent clues. In the song "Glass Onion," Lennon sings "Here's another clue for you all: the walrus was Paul." So why are such clues present and what is the evidence that Paul McCartney died in 1966 and the Beatles covered it up for decades? What did Paul's wife, Heather Mills, mean when she suggested on national TV that she could unmask his dark secret by releasing a box of info if anything untoward should happen to her or their child together? Paul is either one of the most successful rock and pop musicians of all time to this day or he died in 1966 just a few years after achieving fame and fortune. This book weighs all of the available evidence and adds to the evidence by commissioning and revealing a new study by a law enforcement technique called Superrecognizers, something never before achieved in any of the other books in the mountain of books on The Beatles. Come and see the solution to the greatest mystery of The Beatles.