TWO SETS OF SISTERS AND THEIR UNBREAKABLE BOND

Airing On "20/20," Friday, August 13, 10:00 p.m., ET on ABC

Identical 22-year-old Texas triplets Chandra, Jordan and Trae Berns are reminded of their harrowing ordeal every time they look in the mirror - being burn victims in a fire that engulfed their home and killed their mom when they were just 17 months old. "20/20" is with them as they take a momentous step to try and erase a past that has left its mark physically and emotionally. Deborah Roberts reports on "20/20" airing FRIDAY, AUGUST 13 (10:00-11:00 p.m., ET) on the ABC Television Network. (OAD: 7/17/09)

Plus: Annie and Alex had a carefree childhood. Daughters of newspaper heiress Anne Scripps, they grew up happy, privileged and loved in the suburbs of New York. Then on New Year's Eve 1993, in a senseless act of brutality, their stepfather, Scott Douglas, killed their mother and then killed himself by jumping off the Tappan Zee Bridge. Flash forward to today� Annie, who had never gotten over the grief and guilt of her mother's death, does something that shocked her sister and friends -- Annie jumped from the Tappan Zee bridge the same way and in the same place that her murderous stepfather had so many years ago. Why? Deborah Roberts reports.

"20/20" is anchored by Elizabeth Vargas and Chris Cuomo. David Sloan is executive producer.