The 1988 bombing of a PanAm 747 as it passed over the Scottish village of Lockerbie was one of the seminal acts of Islamic terrorism. All 259 people on board the airplane, and 11 on the ground, were murdered. Until now, only one person, former Libyan intelligence officer Abdelbaset al-Megrahi, has been charged and convicted in the attack. But now, 33 years after the event, a second defendant is in