Series in which archaeologist Julian Richards returns to some of his most important digs to discover how science, conservation and new finds have changed our understanding of entire eras of ancient history. He goes back to the excavation of two very different Iron Age women - the possible sacrifice of a teenage girl from the Cotswolds, and the extraordinary Chariot Queen whose well preserved possessions are leading to some astonishing new conclusions about Iron Age belief, all because of a mirror and its otter-fur bag.