The distinctive grass-covered remains of the deserted medieval village of Ulnaby are a landmark in the Durham countryside, but they have never been dug. The Team have been invited to investigate one of the best-preserved archaeological sites in Britain. With medieval historian Dawn Hadley, Tony looks at the history of Ulnaby. Michelle Brown of the British Library examines the 14th century Luttrell Psalter, providing clues about the people's lifestyle. Mick is shown a replica of a medieval horsedrawn plough, while Brigid finds a coin, and Matt uncovers a quern-stone.