A book about an investigation into police shooting unarmed victims dead in 1980s Northern Ireland

In a 1988 book, ‘Stalker’, John Stalker, the former Deputy Chief Constable of Greater Manchester Police, wrote: “In May 1984 I was asked to undertake an investigation in Northern Ireland that very soon pointed towards possible offences of murder and conspiracy to pervert the course of justice, these offences committed by members of the proud Royal Ulster Constabulary. I devoted two years of my…