Plot: The final part of this fascinating series presented by Penelope Keith and Paul Martin on the reinvention of Avebury Manor sees designer Russell Sage and the historical experts rush to get the house finished for opening day. But with the wallpaper held up in customs, a Queen Anne bed that is too big for the room and a last minute dash for furnishings, how can it possibly come together in time? Will the National Trust accept the outlandish schemes, and what will the public make of it all?