Poppy's a free spirit. Alex loves a plan. After years of summer vacations, these polar-opposite pals wonder if they could be a perfect romantic match.

Pan Am Flight 103 explodes over Lockerbie 38 minutes after takeoff on Dec. 21, 1988, killing 259 on board and 11 on ground. Dr. Jim Swire loses daughter Flora and seeks justice with wife Jane.

Secret Service Agent Mike Banning is framed for the attempted assassination of the President and must evade his own agency and the FBI as he tries to uncover the real threat.

In 1980s Beirut, Mason Skiles is a former U.S. diplomat who is called back into service to save a colleague from the group that is possibly responsible for his own family's death. Meanwhile, a CIA field agent who is working under cover at the American embassy is tasked with keeping Mason alive and ensuring that the mission is a success.

After braving D-Day, Capt. John Miller leads a band of soldiers behind enemy lines to find a paratrooper whose three brothers have been killed in action.