Italy is stunned when Itavia Flight 870 plunges into the Mediterranean Sea, killing everyone aboard...but there are more shocks to come. A mysterious call to an Italian journalist claims the disaster was the result of a warplane missile, an accusation that will throw the investigation into turmoil. Decide for yourself what took down the commercial DC-9 on June 27, 1980 as we track three inquiries over three decades, each in search of one valid explanation for this explosive disaster.