zarrini, the islamic thinkers society member, who we ve been told first introduced bryant to the radical group. khattab has told us that ahmed zarrini was considered an extremist even within the islamic thinkers society. i come here to zarrini s parents house near the selde n mosque in long island. if ahmed is in there, then behind those windows could be the secret to bryant s radicalization. i don t see ahmed, but i do meet his father. thank you. you have a very good day. you too. thank you. good luck. mr. zarrini tells me, ahmed is not home. he s out of the country. but we get a tip that ahmed is not abroad. so we wait, and within a few hours a car goes by. that s him. that s him! that s ahmed. in it, ahmed and his father. later that day, i return to the house. well, ahmed zarrini s father