On the 5th of October 1974, the Provisional Irish Republican Army blew up a military pub in Guildford, killing four soldiers, one civilian and injuring sixty-five others.
The responsibility for the heinous act of terror was quickly thrown at three young Irish men and a seventeen-year-old English girl. On top of this, accusations of running a "bomb factory" was soon being shouldered by a middle-aged Irish woman who'd lived in England for twenty years.
The British justice system had no evidence to prove the Guildford Four or Maguire Seven were connected to any bombings, but a large helping of police brutality and a bit of systemic corruption would soon sort that out.