S1, E1: In the 21st century, commercial planes don't just vanish. But in 2014, Malaysia Airlines flight MH370 did. Tells the definitive story of the flight's devastating disappearance and unravels the many theories and conspiracies that have attempted to explain the cause of the lost flight. This special draws on new evidence, expertise from investigators and candid testimony from those closest to the tragedy--the victims' families.