now did zakia link up with jaffrey?> reporter: jaffrey grew up in a million dollar home in california. our first stop an office building where jaffrey's father runs a medical marketing company. >> i'm looking for mr. khan. i'm richard engel from nbc news. [000:12:58;00] could i talk to you for a minute? many of the family members we approach for the story didn't want to appear on camera, for fear of a backlash. off camera jaffrey's father who came from pakistan at a young age told us what he said to the fbi, he hasn't spoken to his son in nearly two years. we found this you tube video of jaffrey goofing around with his cousin, that cousin agreed to meet with us in the park where they used to hajj out. >> no one else was really that close to me as jaffrey was. >> reporter: he says he was in to rap music, marijuana and the internet until he started watching propaganda videos. >> he was getting angry and said we're surrounded by a bunch of sinful people and we should move to a muse limb country. >> he was more angry. more

it turns out zakia was the missing link. her husband travelled to syria with her little brother. a picture was starting to emerge. >> what seems to be most mysterious is this connection. how did she link up with joffery. >> so we headed to california where joffery grew up in a million dollar home in pal palo alto. our first stop there was a building where his father runs a medical marketing company. >> i'm richard engle from nbc news. we have tried to call you a few times. >> yes. >> can i talk to you for a minute? >> many of the family members we approach for this story didn't want to appear on camera for fear of a backlash. off camera joffery's father that came here from pakistan at a young age told us what he said he told the fbi. he hasn't spoken to his son in nearly two years. we found this youtube video of joffery goofing around with his cousin. that cousin agreed to meet with us in the park where he and joffery used to hang out. >> no one else really was that close to me as joffery was. >> he says joffery was into rap music, marijuana and the internet until he started watc

how did zakia link up with jaffrey? >> reporter: so we headed to california, where jaffrey grew up in an affluent home in palo alto. hello. i'm looking for mr. khan. are you mr. khan? i'm richard engel from nbc news. we've tried to call you a few times. could i talk to you for a minute? many of the family members we approached for this story didn't want to appear on camera for fear of a backlash. off camera, jaffrey's father, who came here from pakistan at a young age, told us what he says he told the fbi. he hasn't spoken to his son in nearly two years. we found this youtube video of jaffrey goofing around with his cousin. that cousin, ahmed, agreed to meet us. ahmed says jaffrey was into rap music, marijuana, and the internet until he started watching propaganda videos. >> he was getting angry. he said we're surrounded by a bunch of sinful people and we should move to a muslim country. he was getting more angry, more hateful toward americans. >> it was around that time, ahmed says, that jaffrey met and quickly married

. >> it was around that time, he says, that jaffery met and quickly married zakia. >> how did they meet? >> online. like a matrimonial website. >> was she religious at the time? >> she was too. she wore the hijab and covered her face. >> the newlyweds settled in ohio and she enrolled at ohio state university. of all places, they chose to move into this building where an al qaeda member, christopher paul, was arrested in 2007. paul is searching a long prison sentence for plotting attacks, but his wife lived right next door to zakia and jaffery. we went to a nearby mosque where paul used to pray, to see if anyone there knew jaffery, zakia or rasol. >> i had met jaffery. >> this is the mosque's board president. >> there have been a number of people who have passed through these doors who have ended up being associated with extremist groups. >> there have been a few. >> how do you explain that? >> they were not actually involved in the mosque too much. if someone wants to come and worship, they're welcome to. what they do outside of their life is their own business. violence, terrorism, the