In 1988, the families of those on board flight Pan Am 103 learn that the plane has crashed over Lockerbie, Scotland, killing 270. A terrorism investigation begins.
A Palestinian terror group funded by Iran is initially suspected in the Pan Am 103 bombing, but Scottish and FBI investigators find evidence pointing to Colonel Gaddafi's Libya.
The CIA hands over a Libyan double agent who provides crucial evidence needed to bring the two bombing suspects to court, but the key witness changes his story as the trial gets underway.
A shocking verdict at the Lockerbie trial leaves victims' families unsatisfied; years later, fresh evidence comes to light which raises questions about the truth.