Discoveries are becoming quite common in today's society, from the Crusader's Sword Lost at Sea to the small gold bible recently discovered by a metal detectorist which we recently covered on Gone Medieval. Many of these finds are categorised as treasures and therefore belong to the Crown. But what makes an object treasure, and what are the processes behind it? In today's episode, Cat travels to The British Museum. Joined by Professor Michael Lewis, head of the Portable Antiquities Scheme (PAS) and Treasure at The British Museum. Learning more about the PAS and the work involved, we explore the Medieval objects and their importance to our understanding of the past.