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.

From the Isle of Wight to Glastonbury, Oxford, London and Scotland, she'll meet passionate locals, unearth legends of sacred vessels and ancient cauldrons and investigate Arthur's grave where the trail takes an interesting turn.

Her quest culminates at the mysterious Rosslyn Chapel and with a controversial archaeological find.