Lockerbie

Shortly before Christmas 1988, the Pan Am 103 passenger plane explodes over the Scottish community of Lockerbie. Initial indications point to a bomb attack - but who was behind it?

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.

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.

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.