On the trail of some of Northumberland's greatest historical treasures, the actor goes diving at the Farne Islands, discovering mysterious cannons and the wreck of a ship sunk by the Luftwaffe during the Second World War. He then finds out about Roman relics unearthed in his home county, including the Corbridge Hoard, discovered by students in 1964, and the Vindolanda Tablets, the oldest handwritten documents in Britain. Finally, he visits Lindisfarne to hear stories of the Viking raid on the island and the legacy left behind by these Norse invaders.