A classicist and a neuroscientist explore the Ancient Greek words Liberty, Comedy, Charisma, Xenia, Wisdom and Peace and travel both forwards and backwards in time, investigating how these ideas have been moulded by history and have made an impact on history and the human experience. Hughes is the author of Helen of Troy – Goddess, Whore and The Hemlock Cup. Critchlow is named as a British Council's Top 100 UK Scientist for her work in communication.