jack fenwick, bbc news, westminster.ficers who worked in the assad security services to surrender and join the new administration. for decades, the syrian regime ran an extensive surveillance of its citizens, monitoring opposition groups, members of the civil society and journalists. when she was living in syria, our correspondent lina she went back to the security service branch where she was last investigated, looking for her files. so this is exactly where i entered. but they would keep me outside waiting, and i had to walk all the way without a phone, without an idea, without any contact with anyone internally, externally. and i would go up for investigation knowing that there are many prisons down, many stories underground. it was all set on fire by the regime before they ran away, i'm told. and every file i opened, its like an accusation of terrorism, belonging to terrorist groups. you don't know where to start. there are hundreds of, or maybe thousands of files belonging to thousands of syrians. living through syr