Irish Government, and the British Army, and reveals disturbing facts about the way in which terrorists and the Intelligence agencies targeted, undermined and penetrated each other’s ranks. Within the pages of the book Dillon was one of the first to expose the IRA's practice of executing and secretly burying some of its victims; a practice which subsequently led to public demands for the IRA to reveal the whereabouts of those it made "disappear". He also unraveled the use of state-sponsored terrorism and the phenomenon of "Rompering", a form of sadistic torture used by the paramilitaries. Killer in Clowntown – Joe Doherty the IRA and the Special Relationship, 1992, is the tale of Joe Doherty, the convicted IRA gunman who captured American popular opinion by frustrating the British Government’s attempts to have him extradited from New York to Northern Ireland to serve a 30-year prison sentence for murdering a British Special Air Services Officer. Dillon traces Doherty’s terror history, providing personal insights into legal events inside the US Attorney’s office in New York. He unveils proof of Prime Minister Margaret Thatcher's secret intervention in the case, including how she told the Americans overseeing the Doherty case that she considered his extradition to Britain a quid pro quo for her allowing U.S. jets to use British airspace on the way to bomb Libya. Dillon was asked by the Federal Court in New York to provide testimony about the inner workings of the IRA, based on his work The Dirty War He agreed on condition he would be judged a "friend of the court" witness and not one seen to be supporting one or the other side in the case. In the end, he was not called to give evidence. According to The Guardian, "Dillon's book demands the attention of anyone concerned about civil liberties in the United Kingdom…a catalogue of cynicism, lies, harassment, torture and murder that makes the Cold war duplicity a la Deighton and Le Carre seem positively endearing". In Stone Cold: True Story of Michael Stone and the Milltown Massacre, 1992, Dillon portrays Michael Stone, a natural born killer, infamous for his murder spree during an IRA funeral in Belfast’s Milltown Cemetery in March 1988. Stone, armed to the teeth, fired into the crowd of mourners, killing three men and wounding several others. His targets had been the Provisional IRA leaders present at the graveside, in particular Gerry Adams