On April 17th 1984, Yvonne Fletcher, a young female officer, was murdered as she policed a demonstration outside the Libyan embassy. A gunman opened fire from the building and PC Fletcher was shot in the back and fatally wounded. Her murder triggered a political and diplomatic storm but no-one has ever been brought to account for her death. Over quarter of a century later, the family and friends of PC Yvonne Fletcher are still asking who killed her and questioning why they can’t be brought to justice. For the first time, Real Crime's Mark Austin pieces together the crucial events leading up to and following the murder of Yvonne Fletcher. He reveals that according to a confidential document written for the Crown Prosecution Service and the Metropolitan Police, there is sufficient cause to mount a prosecution for conspiracy to murder against two Libyans.