. >> back in 2010, angela swantech, an experienced oncology nurse, first saw dr. fata's clinic. she was there applying for a job, and would spend a day shadowing one of fata's nurses. tell me what that day was like. >> that was the first time i got a glimpse of the infusion room. >>> as she watched the nurses work, she saw potent cancer >> she says patients were getting drugs at higher doses and for longer time periods she believed was medically necessary. and she was worried about the consequences to their health. to be clear, the things that you observe, are these things that are just unusual or just plain old wrong? >> they are plain wrong. >> you're not supposed to do them that way? >> no, no. there's no gray area with chemotherapy. it has a specific route over a specific time. >> angela turned down the job, and left as quickly as she could. so when you left that office that day, you're driving off, what are you thinking about this place? >> i was horrified. i remember getting into my car, and i thought to myself, these patients have no idea, the horrible care that they are