Tony and the Team help investigate the Saxon roots of Bamburgh Castle, high on rocky cliffs in Northumberland above the vast North Sea beach and with the magical island of Lindisfarne visible in the distance.

It's been a seat of power for thousands of years and has long held the attention of archaeologists. The Team are at Bamburgh to help the Bamburgh Research Project, which for a decade and a half has been digging through 1000 years of history to uncover the Saxon roots of this fortress.

Bamburgh was once home to the 'Bernician Kings', Anglo Saxon overlords who ruled great swathes of Britain. Could there be a unique stone-built hall under the carefully manicured lawns of today's castle?

As the Team hear stories of brutal death and financial wealth, and examine finds of gold jewellery and stone thrones, Phil and the diggers edge closer to a tantalising discovery.