Inside the World's Biggest Auction House. Two-part series lifting the lid on the secretive and private world of Christie's, the world's largest auction house. Global president Jussi Pilkannien and his team chart the highs and lows of auctions in London, Hong Kong and Shanghai. We find out if Brexit spooked the art market and if Christie's' big push into Asia is paying off. With rare access to some of the richest collectors in the world, we find out how and why they buy at Christie's and where they put some of the world's most expensive artworks. We meet the auction experts who find treasure in unexpected places. But in a year of turmoil, will such works sell well? What are Christie's doing to make sure the 250th anniversary sale, on which they have staked their reputation, is a success? And what is happening in China that makes Jussi so convinced that it is the future?