. >> reporter: mary kay evans said she complained constantly about the care her husband jack received at potomac nursing center in arlington. >> his dentures were never removed from his mouth and cleaned. his fingernails and toe nails were long. his body was dirty. his hair was never shampooed and unshaved. >> reporter: his widow would still find his lunch still uncovered and untouched in the evening. >> nobody would feed him and he couldn't feed himself. it was just dropped off there. sometimes there would be roaches in the tray. >> reporter: the medicare virginia state fraud office asked if she would allow the fbi to put a camera in her husband's room and she said yes. with the evidence on the video, they were able to indict 11 employees on charges ranging from neglect and forgery to assault and battery. the worst case involves a male nurse who is accused of and apparently caught on tape holding a pillow over mr. evan's' face. the nurse charged in the pillow incident is 30-year-old john diaz. his trial is coming up next month. this woman, a nurse's aid, has already been convicted of