Real Madrid are the world's most valuable football club. They're the reigning European champions and have won more European Cups than any other club in history. Now they've opened their doors and their books to outside scrutiny for the first time, giving Columbia Business School professor Steven Mandis unprecedented access to every part of the business.How does an organisation co-owned by 92,000 fans operate? How was the club transformed from the brink of bankruptcy 16 years ago? What's the relationship between success on the pitch and off the pitch? What role do values play in the business? What lessons are there for other sports teams and for businesses more widely?Through conversations with fans, players, coaches and board members - including a rare in-depth interview with club president Florentino Perez - Professor Mandis uncovers the secrets of Real Madrid's sporting and financial success.(Image: Professor Mandis and Real Madrid president Florentino Perez. Credit: Real Madrid)