Wars leave scars. Not only physical ones on the places where they were fought, but also mental ones on the people caught up in them. The Vietnam War was a conflict so brutal, so relentless that, half a century after its end, its echoes still haunt two nations. The second and final part of "Vietnam, 50 Years On…The War That Still Speaks" explores the efforts being made to heal the lingering wounds from the conflict. From the return to his family of a fallen soldier's diary and an adopted child's traumatic search for her birth family, to the scientists working to name the nameless dead, this episode weaves together intimate personal stories through which the Vietnam War still speaks to all of us.