The countdown of the 50 greatest treasures found by the British public continues from 26 to 19 and includes a tale of murder and mystery behind a discovery of pilgrim badges in a river in Canterbury. Dave Crisp reveals how it feels to dig up 52,000 Roman coins, Brian Blessed unearths the story of a Roman bust found by a farmer in Oxfordshire, Gethin Jones is amazed by a Roman drinking cup with a leopard handle, and there is a look at a Viking curiosity revealing ancient runes. Presented by Michel Buerk and Bettany Hughes.