and by the frontline journalism fund, with major support from jon and jo ann hagler. and additional support from millicent bell, through the millicent and eugene bell foundation. >> lowell bergman: at the end of the day, when most of the world goes home, a nearly invisible workforce clocks in. millions of janitors clean malls, banks, big box stores the office where you work. many janitors are women who work at night, in empty buildings, in isolation, and that can put them in danger. >> bergman: maria bojorquez cleaned offices in san francisco's iconic ferry building. >> bergman: what happened to maria bojorquez is not an isolated incident. according to the department of justice, there are more than 17,000 sexual assaults at work a year. we began investigating this three years ago and found it was rampant among women farmworkers who are often undocumented and isolated. now we have discovered a similar pattern of violent sexual abuse against women janitors who work the nightshift. we have uncovered cases of sexual assault and rape at companies large and small, and in th

and by the frontline journalism fund, with major support from jon and jo ann hagler and additional support from james worth. >> my name's todd michael fickett. i'm here for arson, in prison for arson. down here, it's like being buried alive. you're like... you're someplace alive, but you're no place anybody wants you. >> narrator: todd fickett has just assaulted a prison officer. he's been put in an isolation cell as puni. >> my mental state will probably go downhill like it did last time. i go pretty crazy. >> narrator: todd is facing six months alone in his cell. he's one of an estimated 80,000 inmates across the united states in solitary confinement. (howling) (banging) (laughter) (banging, shouting) (howling) >> narrator: friday night in the segregation unit at the maine state prison. all the inmates here are in solitary confinement. (banging) almost every day, the prisoners act out against the officers who work the unit. they flood their cells. they pour bodily fluids under their doors. and they cut themselves with razor blades. >> kidd! (knocking) kidd, you need to cuff up. you might

and by the frontline journalism fund, with major support from jon and jo ann hagler and additional support from james worth. >> my name is keith huff. i'm from louisville, kentucky. i've been incarcerated five times in the kentucky state prison system. i got a total of 27 years in the system. is it okay to go in? >> yeah. >> thank you, sir. >> narrator: keith huff is a million-dollar prisoner. the state of kentucky has spent an estimated $1.1 million incarcerating him. he's been diagnosed with schizophrenia and bipolar disorder. >> (whispering prayer) i do great in prison for some reason. it's sad, but i do great in prison, i mean, because i got the structure, people telling me what to do. when i got somebody behind me, on me, i do great in life, for real, i really do. >> narrator: keith is currently serving five years for burglary, theft and impersonating a police officer. he's set to be released in three months. >> i do some stupid stuff. i have been coming in and out of prison since the early '80s. every time i have left prison, it was like a revolving door. it's just a cycle. it's a cu