Northern Ireland Troubles (Legacy and Reconciliation) Bill

That is exactly the central point. There are perhaps two ways of getting the knowledge. One way is to go on as we have been in trying to investigate these things piecemeal, with everybody trying to hide everything to the maximum because they feel that they will be prosecuted. The other way is to bring in a truth recovery mechanism which, in return for the granting of immunity, maximises the possibility that the truth may come out.