THE MI5 SPY AND THE IRA: OPERATION CHIFFON

7PM, BBC2

★★★★

To mark the 25th anniversary of the Good Friday Agreement, legendary journalist Peter Taylor reveals, for the first time, the details of a top-secret intelligence operation that took place in the 1970s, which saw an undercover MI5 officer, known only as Robert, risking his life to try to broker peace between the UK Government and the IRA. Peter, who has reported on the conflict for 50 years, expertly brings the extraordinary story alive in this one-off documentary.