This episode explores how DNA research is revealing the truth about Ireland’s early inhabitants. Some 10,000 years ago dark-skinned, blue-eyed people roamed our forests. Thousands of years later, they were replaced by a new wave of settlers that introduced a dynamic new technology – farming. Now, Dr Lara Cassidy of Trinity College Dublin has uncovered an astonishing secret about a man who was buried at the centre of Newgrange, our most sacred ancient monument. Her discovery gives an astonishing insight into the culture and beliefs of the people of Ireland around 3000 BC.