In this one off, 90 minute special, Coronation Street's DNA Secrets reveals the secrets lying deep in the DNA of Britain's best-loved street. Uncovering the ancestral stories of Weatherfield's finest – and revealing incredible connections they had absolutely no inkling about…until now. From a single, tiny sample of saliva it's now possible to find connections with people and places that span centuries and continents - revealing unexpected stories and family connections with people on the other s