Tracy reveals the story behind not one but two of history's most infamous private lives, which are forever intertwined - the tragic 'mad' King George III and his son, the Prince Regent. They could hardly have been more different as men and the two hated each other. Here, Tracy explores their fractious relationship, which was made worse by the King's 'madness' - a condition that has attracted recent fascinating theories. The suggestion that it was made much worse by his almost inhuman treatment makes a sad story sadder. This terrible father-and-son relationship dominated the life of the Prince Regent and eventually created one of England's most controversial Kings.

In this episode, Tracy is transported back to Reformation England and the decadent, licentious court of Charles II. The 'Merrie Monarch' let nothing get in the way of a good time and so Tracy is introduced to a world of mistresses, pimp-masters, secret tunnels, sumptuous feasts... and merkins. She also hears more about the King's favourite mistress Nell Gwynn - perhaps a little more than the simple orange seller-turned-actress of popular image.