Agents of Influence were agents recruited by British Intelligence to infiltrate the IRA and Sinn Fein during the peak of the Troubles in Northern Ireland. These spies played a significant role in the fight against Irish republicanism. Some of these agents for the first time, have come out to tell their stories of the secret intelligence war which helped bring the IRA's armed struggle to an end. This book reveals the hidden agendas of prominent republicans like Martin McGuinness, Freddie Scappaticci, Joe Haughey and John Joe Magee. It brings to light recently declassified top secret documents and testimonies of agents and their hadlers.