the o'hearn bomb payload was c4.ponents are polyimide tape and flux core solder. - run that through our known bomber database. - no hits. - the county bomb tech said that the circuit board components could be of european design, so maybe we want to check with interpol. - here's one. jeyla osman, 26-year-old turkish national. she emigrated to the uk with her mom when she was seven years old. - any relatives, associates? - no. that's it. she was top of her class at imperial college in london with a degree in chemical engineering. she was suspected of building the bomb that killed seven commuters on the london tube three years ago. - wait, all right, look, jeyla was a kid when ghost squad was operating, so what's the connection? - how did she go from science whiz to a suspected terrorist? [sighs] all right, it's been a long day. why don't you go home and get some rest and figure out how we're gonna find this woman. i'll stay here in case anything pops. - good night. - who are you, jeyla osman? what the hell do you want?