detective julissa trapp could see. it was, or have been, a woman. her body wrapped in a blue plastic tarp. >> we had no idea who she was. we had no idea where she came from. how did she end up there? >> reporter: something about the dead girl got to detective julissa trapp. ending up this way. anonymous child of god in a garbage dump. so the detective did what she always does, she bought a rosary. >> it is a way for me to kind of connect to my victims. >> reporter: unusual? maybe. the detective should lean on her profound catholic faith to help solve crimes. the julissa trapp does. >> cases don't always get solved and 48 hours. >> surprise, surprise. >> they take time and work. >> the rosary helps you? >> it does. >> reporter: if she could solve this case should give the rosary to the dead woman's family. after she had to figure out who she was. from just one identifying marks on her neck, a tattoo. jodi. was that her name? reaching out, detective trapp called the anaheim police department. of tattoos. they have one. descriptions of tattoos collecte

before detective julissa trapp, this will always be hallowed ground. >> it is hard to look at that, and no that is the end but you are in a better place and you are together and helping each other. you can rest now. and i can take it from here. >>> that is all for this edition of dateline. thank you for watching. hello, i'm andrea canning, represent the malignant sidemo of humanity. these people enjoyed killing. woman: things that the police had never seen before. the malignant side of humanity. these people enjoyed killing. >> things that the police had never seen before. >> sharon tate begged her, please don't kid me. >> average kids would be the killers. >> he would dose them with lsd. >> are you sane? >> sane? >> charles manson stole lives. >> grief like you cannot imagine. >> he stole innocence. >> he looks beautiful and happy. it draw as lot of people. >> and left the city living in fear. >> gun stores sell out. guard dogs are now selling for $5,000. >> good. happy. >> you may think you know the manson story, but not like this. >> he's a very evil, sophisticated conman who knows e