Alice Roberts begins her search for the Holy Grail on the Isle of Wight, exploring a provocative new theory that challenges traditional Arthurian geography. Investigating the island’s ancient landscape and early medieval sources, she asks whether this overlooked location could hold the key to one of Britain’s greatest legends. Join Professor Alice Roberts on an adventure across Britain as she decodes the truth behind its Holy Grail legends, linking Arthurian lore, sacred relics and the Knights Templar.