Buuxi weedha soo socota: Bishii Sebtember 1983, magaalada Belfast, badhtamihii rabshadaha, Sargaal Sean Duffy, oo ka mid ahaa tiro yar oo kaatooliyiin ah oo ka tirsan Royal Ulster Constabulary (RUC), ayaa laga saaray RUC eedeymo been abuur ah. Isla mar ahaantaana, Dermot McCann, oo ah ninka ugu fiican ee IRA iyo saaxiibkii hore ee dugsiga ee Duffy ayaa ka baxsaday xabsiga Maze wuxuuna noqday bartilmaameedka ugu weyn ee Sirdoonka Ingiriiska. MI5 ayaa Duffy ka soo jiiday hawlgabkiisii sakhraanka ahaa si uu u raadiyo McCann. Buuggu wuxuu daba socdaa isku dayga Duffy ee xalinta dilka qolka xiran si loo helo macluumaad gudaha ah oo ku saabsan halka uu ku sugan yahay McCann, taas oo ugu dambeyntii keeneysa
isku day dil oo loo geystay Ra'iisul Wasaarihii Ingiriiska Margaret Thatcher ee Brighton.