. >> have you heard about debra may helmick? >> no. >> the 10-year-old? h-e-l-m-i-c-k?> richland county? >> yeah. >> uh-huh. >> listen carefully. >> two weeks after shari smith was kidnapped, debra may helmick was abducted in front of her parent's trailer, 24 miles from the smith's home. in richland county. her father was inside, just 20 feet away. neighbors saw someone pull up in a car, get out and grab debra before speeding off. like shari, debra was a pretty blue-eyed blond. unlike shari, debra was only a child. >> turn right. last dirt road before you come to the stop sign at two notch road. go through chains and no trespassing sign. go 50 yards and to the left. go 10 yards. debra may is waiting. god forgive us all. >> i felt like we were dealing with the same individual. >> investigators now knew they were hunting a serial killer. at the south carolina law enforcement division, scientists were still going over their only piece of hard evidence, shari's last will and testament. it had been written on lined paper from a legal pad. forensic document examiner, mickey d

. >> correctional officer robert helmick was recently assaulted. >> one of the assaults i encounteredthe flask, had an offender standing there with a homemade weapon. we call them shanks in here. asked him to pass his food tray. he tried to come out and stick my hand. >> you have to move there a little bit. >> but there are some inmates at isp who are constant threats to officers. luis antonio nieves is such an inmate. in 1992 at the age of 17, he went to the home of a neighbor in milwaukee, wisconsin. the neighbor, a 32-year-old mother of four, rebuffed his sexual advances. he stabbed her repeatedly in the face, neck, chest and legs, killing her. >> open two. >> since coming to prison 14 years ago nieves has received more than 130 major conduct reports including two near-fatal batteries of female staff. his nickname is the monster. >> i'm a laid back, quiet type of individual. i was born in puerto rico. when i was 10 i moved to new york. i spent most of my life in new york. when i was 16 i moved to milwaukee, wisconsin. lived with my mother and then in 1992, that's when i caught my c