Dave Myers visits Pontefract Castle to help builders restore the remains for future generations. He does some long overdue gardening and goes into battle with the Roundheads and Cavaliers. The castle was known as the 'key to the north' for almost 600 years, until it was destroyed during the English Civil War in 1648. It once hosted Henry VIII, Elizabeth I and Charles I and boasts one of history's most feared dungeons. Dave experiences torture 17th-century-style and uncovers the mystery of what happened to the castle stone, once the castle itself had been demolished.