Damn good film that, based on the events of the 'Guildford Four'.

It is based on the true story of the Guildford Four, four people falsely convicted of the 1974 Guildford pub bombings that killed four off-duty British soldiers and a civilian

Giuseppe's lawyer Gareth Peirce, who had been investigating the case on Giuseppe's behalf, discovers vital evidence related to Gerry's original alibi with a note attached that reads, "Not to be shown to the defense." Through a statement made by Charlie Burke, at a court appeal, it totally exonerates Gerry and the rest.

Might differ slightly IRL but the events of the film play out that the lawyer only finds out about the note because she keeps going in almost every day to review the case and the day she gets lucky is because when asking for the same evidence lot as always, [something like "the Conlon case" as both father and son were imprisoned], the normal guard [who is "on the take"/in on the framing and holding back the son's case notes], is off sick or something. At this point I believe the father had already died in custody and it was his case notes she was [only] allowed to see, so when the stand in guard who isn't aware of the conspiracy asks which set of Conlon evidence she is asking for out of the father and son, she seizes the moment and asks for the son's case notes instead, which is where the aforementioned alibi has been since the start.

The film ends with the current activities of the wrongly accused, but also that the police who investigated the case were never prosecuted for any wrongdoing. The real perpetrators of the Guildford Bombing have not been charged with the crime.