With his wife and 18-year-old brother-in-law in tow, Jaffrey Khan left behind the moneyed, manicured precincts of his Bay Area home and offered his services to ISIS, NBC News learned from a thumb-drive it received from an ISIS defector.
Jaffrey Khan's father, Salem Khan, suggested his son was a lost soul and an mark for bloodthirsty fanatics selling the fantasy of an Islamic caliphate.
"He was gullible," said Salem Khan, who lives in a $2 million house and runs a medical marketing company in Palo Alto. "You know the people looking to scam you out of money or something? They're looking for people like him."
Through the documents on the thumb-drive NBC News pieced together the story of a single cell with three members. Jaffrey Khan and Rasel Raihan enlisted with ISIS on July 11, 2014, the documents show. Though she is not in the files, they were joined by Zakia Nasrin, now 24, who is Rasel's older sister and Jaffrey's wife.
It's the story of two immigrant families who built new lives in America only to have the heirs to their dream join an organization hell-bent on destroying it.