Many of us take for granted that commercial air travel is safe. In 2018, with some 10,000 aircraft in service in more than 150 countries, industry leader Boeing had built its reputation on a dogged commitment to safety. But after 346 passengers are killed when two Boeing 737 MAX jets crash less than five months apart, dedicated journalists, surviving family members, and the United States Congress fight to reveal a culture of concealment and deceit within the venerated company.