buccio leans on a detainee who's not his informant. >> the deck is one.u know everybody will go on lockdown for this shank thing. you need to find out who had it. find out who had it and i'll try to get them. this is -- as soon as we come out, i'm going to try my best. >> why is anybody looking for keys >> once investigators determine who made the shanks, they'll either charge the inmate in court, or they'll use it as leverage to turn him into an informant to solve other cases. >> good job, boots. good job. you really came through in the clutch. >> for now, investigator buccio can enjoy a momentary victory. >> until today, i was regretting bringing him upstairs. >> i'm sorry. >> we had the transfer papers ready. >> we had your transfer papers ready. >> you ready to be out. >> anything for you. you jump in a shoe box, and you're upstairs. >> oh, man. >> wow! >> that was good, man, for real. >> the culture of violence inside the jail mirrors the brutality of the streets. especially on chicago's west and south sides. according to investigator domma, a nine-y