The secret life of Kim Jong Un's aunt, who has lived in the U.S. since 1998

But she's not just any immigrant. She's an aunt to Kim Jong Un, the young North Korean leader who has threatened to wipe out New York with a hydrogen bomb.

And for the past 18 years, since defecting from North Korea into the waiting arms of the CIA, she has been living an anonymous life here in the United States, with her husband and three children.