Disappeared by the IRA

What do you do when your mother suddenly disappears and never comes back? During the conflict in Northern Ireland, a number of people were killed and then secretly buried by the IRA. Uncovering new hard evidence that Gerry Adams, currently President of Sinn Fein, was deeply involved in one of the killings, this is a landmark documentary on the Irish 'Troubles', the hard men who drove it and issues of accountability when peace finally comes.