As BBC Television Centre closes, its time to learn about THE SECRET OF TELEVISION, a prized manuscript written by one of the founders of television, Marconi. His ancient guide to the art of programme making was apparently lost by the BBC in the eighties. Deep inside the bowels of the BBC, our AmberChannel reporter sets out to try and discover where the much sought after document might be. This all took place in the weeks before he took early retirement (Halloween 2006).