Mariella Frostrup visits Germany to investigate a badge that reveals the story of a massacre and a forgotten English saint, while Ekow Eshun researches the origins of an unusual 17th-century grooming aid. Suzannah Lipscomb travels to Holy Island off the coast of Northumberland on the trail of Elizabethan coins.

Katherine Jenkins travels to Boverton in the Vale of Glamorgan to tell the story of a remarkable find of Iron Age jewellery. Bettany Hughes visits the Isle of Wight to meet the girl who uncovered a 5,000-year-old tool while on a school trip, and Mary-Ann Ochota dives for treasure at the site of the sunken HMS Colossus off the Isles of Scilly. Last in the series.