early investigations were there trying to figure out who is behind these scattered attacks throughout sigrid syria involves a single woman. there is an attack on a town in the northern part of the region close to the turkish border here it's a couple of teargas canisters. one falls in the courtyard of a woman and she becomes the only toweled it. she could she walks outside. what happened and she gets a pretty good dose of serrin. her family the site should figure out of the country to get medical help. they put in a car and take her across to turkey. she dies in turkey and that in a way is miraculous for her story because it means the turks have abadi. eventually the u.n. as abadi because investigators, july 2013 try to find physical evidence of these chemical attacks. they have a woman they can autopsy and they do this autopsy and it not only find serrin the find enough of it they can do a pretty good forensic profile which becomes crucial later on when you're trying to prove yes, they came from the syrians weapons factory and not from some other source or terrorists. >> host: as you said i