jennifer he esposito have in common? >> he had the heist case i have ever seen. >> we look at the medical mystery story of celiac disease. it's what happens when food and what's in it becomes your enemy. >> >> this is "fox files." >> december 28th, 2011, sub zero temperatures and a winter storm grip north korea as the world's most secretive and oppressive country laid to rest its supreme leader kim jong-il. the world got a rare glimpse inside this sealed off nation, historical throngs of north koreans line the 25 mile route in the procession in a ritual of bizarre mourning but it is unclear if the wailing was genuine or motivated fear. >> people probably understand what would happen if they didn't show sufficient grief. >> much of it was forced. the state wanted this behavior. >> and the state was working over time in the days after kim jong-il's death. they were ensuring that north koreans did not deviate from the socio ideology of behavior. >> north korea is the single most closed repressed society in history. >> every