Since its inception, the series `Long Lost Family' has reunited over hundreds of people with family members that were previously thought to be untraceable. Yet, the reunion serves as just the start of an incredible journey of personal history and discovery that comes with its own set of challenges. In this series, Davina McCall and Nicky Campbell revisit the most compelling stories and reveal the unexpected and emotional turns they have taken since they were last in front of the television camera.