In 1988 IRA terrorist Sean OCallaghan walked into a police station & gave himself up. Sentenced to 539 years imprisonment for IRA crimes including two murders & many terrorist attacks OCallaghan served six of those years before being released by royal prerogative. The reason? For the previous sixteen years OCallaghan had been the most highly placed informer within the ranks of the IRA & had fed the Irish Garda with countless pieces of invaluable information. He prevented the assassination of the Prince & Princess of Wales at a London theatre; he sabotaged operations explained strategy & caused the arrests of many IRA members. He has done more than any individual to unlock the code of silence which governs the IRAs members & in effect made it possible to fight the war against the terrorists. The Informer is the story of a courageous life lived under the constant threat of discovery & its fatal consequences. It is the story of a very modern hero who is not without sin but who has done & is doing everything in his power & at whatever personal cost to atone for the past. From the Hardcover edition.""