This series offers a privileged glimpse of five of Britain's finest houses, all of which are still in use as family homes. They are part of the fabric of the nation, and each has a story to tell. And, they contain some of the great treasures of England. In this programme Selina Scott explores Chatsworth House, Derbyshire, home of the twelfth Duke of Devonshire. Built by the remarkable Bess of Hardwick, and altered by the first Duke, Chatsworth is one of the nation's great private homes but is also open to the public. Running the length of the first floor are the richly-decorated state apartments built for a visit by King William III. But, the King never came.