1986: The body of an undercover British agent is found by the side of a lane in Northern Ireland, a rope tied around his wrists and tape over his eyes. 2016: A police detective probes reports that the killer was another undercover British agent, a man known as ‘Stakeknife’. The largest murder investigation in British history begins.

Henry Hemming is the author of Four Shots in the Night, an extraordinary work of investigative journalism that reads like a thriller as it exposes the parallel worlds of the IRA and British Intelligence and tells the story of one detective’s pursuit of justice.

This event will be chaired by Frankie Burr.