Off an isolated country laneway on a remote area of Irish bog, sophisticated forensic technology is being rolled out in an attempt to crack a now notorious cold case. 21st century science is being used to search for the remains of Belfast man Brendan Megraw who went missing 36 years ago without a trace. Accused by the IRA of being an informer, he was murdered, his body hidden, and the story of what happened suppressed for more than 30 years. It's now known he is one of a group of victims referred to as The Disappeared - there were 16 of them all together, and to date only 9 have been recovered. Foreign Correspondent follows the search for Brendan Megraw and the quest for answers. Where are the bodies, and just what happened all those years ago and how has Gerry Adams one of Ireland best known political identities become embroiled in the affair?