CNN Original Series Lockerbie: The Bombing of Pan Am 103 tracks the mysterious circumstances behind the deadliest terror attack on the United States before 9/11.

This gripping and emotional series examines the 1988 bombing of Pan Am flight 103 over Lockerbie, Scotland resulting in the death of 270 people, including 190 Americans. The series features heartrending interviews with Lockerbie residents and family members of the passengers who detail their personal experiences of the tragic event. It deftly tracks the complex web of theories that emerged during the global investigation that followed, and the unprecedented trial that played out on the world stage. Though a conviction was upheld in 2000, questions remain about those responsible for one of the most extreme terrorist acts on the United States in history.

Weaving together poignant testimony from family members of the Pan Am 103 passengers and exclusive first-hand analysis from investigators, intelligence officers and other key witnesses who have not spoken until now, Lockerbie is the definitive telling of the 1988 tragedy and the ongoing search for conclusive answers on who is responsible.