life behind bars. in some cases those bonds have existed their entire lives. over the years, "lockup" crews have discovered a surprising number of family members serving time together. but few have ever had to face the difficult circumstances that confronted these two women. >> being on death row it was like, it was like i needed to be with my sister. >> the identical twins, convicted of murder, for helping her former boyfriend carry out a triple homicide were sent to the north carolina correctional institution for women. doris got a life sentence. yvette was condemned to die. she told us about her first day on death row. >> i began to hear hurls of insults when i first got in the gate, i began to hear people talk about, oh, she got sentenced to death. oh, she is going to be -- she's going to die for the crimes that she committed. >> even though they were housed at the same prison, the women were prohibited from seeing one