Phone Data Analysis News Today

nightmare. she screamed and she yelled an she cried, it was terrible did she fell down the steps? no one was thinking someone di this to her, but did someone d this to her. it just unraveled from tha moment on. >> the fashionista with re lipstick she meant the world to me. when she walked into the roo it was like a movie star walke in >> corporate executive, caring mom, 1 million dollar smile an a 4 million dollar estate. >> oh my god, i need a ambulance. >> murdered. >> i went screami...

Door,. >> and when in there you go >> police had warrants for all the family members phones. a few weeks later, they ha boxes of records to come through. detectives analyzed suzanne first. >> what could you tell about suzanne from her cell phon records. >> a lot >> investigator robin area from the westchester count d.a.s office specializes in phone data analysis. >> i figure out a pattern of suzannes life just based on her records. >> and on the day of peggys murder,. that day was like >> that t...

>> im glad everythings okay. well disregard for you. have a good night. >> reporter: it was probably the last time peggys voice was heard by anyone except her killer. police were convinced -- still are convinced -- peggy was letting in someone that she knew. susanne? maybe. but why would she use a tracfone to get her mom to open the door in the middle of the night? >> she wouldnt have to let me in. i have a key. and i know the -- how to work the alarm. >> reporter: right. so if you wanted to kil...