. >> reporter: after world war ii, she writes, josef stalin employed a doctor to create alien look alikesut of humans. he then placed them in a round hover and fly aircraft and sent them to america, hoping to set off a kind of mass panic that came after the war of the words radio scare. >> ladies and gentlemen, this is the most terrifying thing i've ever witnessed. >> reporter: and what was the basis for his story? had he seen the craft? had he seen the deformed children? >> he and four other engineers were the recipients of what he calls the equipment, the equipment and the people. and as he told me, two of them were still alive. and he held them and so the way he described them to me, many times he's described them to me, is always with this horrible sense of looking down at them. >> reporter: not only was her source ordered to reverse engineer the flying disc, she writes, but also the people inside. and, she alleges, area 51 engineers began their own human experiments. a program that ran for decades. >> i believe that is the truth of why area 51 is still classified. >> reporter: so, yo