Davina McCall and Nicky Campbell follow Kathleen Fraser Jackson's search for her mother, with the 62-year-old having been trying to track down the woman who gave her up for adoption for more than 40 years. In a last-ditch attempt to help Kathleen find her mum, the Long Lost Family team samples Kathleen's DNA and adds it to an online database, which triggers an epic journey spanning continents and cultures, and unlocking more secrets - and family members - than she could ever have dreamed of.