Some 9,000 years ago, dark-skinned, blue-eyed hunter-gatherers roamed our forests and plains. Thousands of years later, a new wave of settlers washed into Europe from the Middle East and Mediterranean, bringing with them a dynamic new technology - farming. Now Lara Cassidy, a young geneticist at Trinity College Dublin, has uncovered a shocking secret about an early farmer who was buried in one of Europe’s most sacred sites. Her discovery gives an astonishing insight into the culture and beliefs of the people of western Europe around 3000 BC.