Overwhelmed by a cascade of conflicting error messages, Aeroperú Flight 603 plunges into the Pacific, instantly killing everyone on board. A Navy expedition to the sea floor successfully retrieves the plane's black boxes—and a single image of the wreckage reveals a minor maintenance glitch with deadly repercussions.

Shortly after taking off from Shanghai, Korean Air Flight 6316 disappears from radar and slams into a residential neighborhood. Investigators from China, South Korea, and the US join forces. And it's only when they reconstruct the flight in a simulator that the mystery begins to unravel—and they come to a startling conclusion.