one of them katera - she smuggled in drugs, drove a fancy car and had his name tattooed on her wrist helped him run bgf business. earring. >> reporter: she walked out on a break, went to her car, picked up contraband and came in, is that possible today? >> it shouldn't have been possible then. the fact that we watched her leave, and watched her return through our surveillance suggested that supervisors were not doing their job. >> nationally there's a head line every week. "america tonight" attempted to quantify the problem. we discovered no one is tracking it. the u.s. department of justice told us they don't have information on criminal charges filed against prison guards. this comes as the u.s. incarceration rate has more than quadrupled since the 1970s. >> what do you think we would find if we did a research study nationwide. >> based on what you saw play-out in baltimore. >> i think you'd find the general problem of smuggling contraband is a nationwide problem. we are really about preventing violence, crime in the streets. we need to focus attention on what's while the inmates a