In the spring of 1964 more than 50,000 people turned out to watch the two-legged semi-final of the FA Youth Cup between Manchester City and Manchester United. It was a time of great hope and expectation: a new era was to be ushered in, with the virtues of youth personified in the Beatles and Harold Wilson - and in the teams that played. But what happened next? For some, like George Best, it was the start of a golden era of success; but for others it was the highlight of a career that never happened. In Shindler's fascinating new book, he captures an era of high expectation, talking to many who played or watched these famous games; but he also movingly portrays what went wrong for others.