In the aftermath of the Guildford and Woolwich pub bombings, a large number of people of Irish descent were rounded up for questioning by the police in London. Most were subsequently released. But for the Maguire family, 3 December 1974 was the start of a nightmare that is only now ending.

Giuseppe Conlon and his son Gerry are convicted of an IRA bombing as part of the Maguire Seven in 1976. Giuseppe diligently writes his wife Sarah as she works to free her family members from prison.