Gregory Crowne is a concert agent with a difference. His real name is Crown Prince Gregory of Hirtenstein and, although he likes to play down his royal background, there are times when it comes in useful. Even billionaire Japanese businessmen, men such as Takamasa Shige, tend to be awed in the presence of this aristocratic, elegant, yet unassuming gentleman. So when a priceless cello is stolen from Crowne's star performer at the Edinburgh Festival...