High above Athens, Greece, fighter jet pilots track a Helios Airways 737 as they circle the city. What they see is as puzzling as it is terrifying. The pilot is missing. The co-pilot is slumped in his seat, and over 100 passengers appear unconscious, or perhaps dead. But there is one man seen in the cockpit, awake and at the controls. Who is he? Why won't he answer the repeated radio calls? Is he attempting to save the plane or crash it? Join us as we revisit the bizarre case of Helios 522, one of the worst disasters in Greek aviation history.