A shock verdict leaves the families unsatisfied. Doubt is cast on the court's decision, and 34 years after the bombing, a new suspect is taken into US custody.

A Libyan double agent provides the evidence needed to bring the two suspects to court. The trial gets underway, but a key witness changes his story.

The prime suspects for the bombing of flight Pan Am 103 are a Palestinian terror group funded by Iran. But Scottish and FBI investigators are led elsewhere.

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.