Exclusive update on serial murders

NEWPORT NEWS, Va. - It has been 22 long, painful years for Robin Edwards' mother and two sisters. Their  living nightmare  began in the marshy wildlife refuge of Ragged Island on the lower James River. That's where a jogger found 14-year-old Robin's body along with the body of 20-year-old David Knobling, both shot in the back of the head.

"I'd been the last one that saw her," cried Robin's younger sister, Pam Johnson, who was only 12-years-old when her father broke the news.   "And he said, 'She's gone and she won't be coming back.'"  It's a memory Pam has relived too many times to count, same for the rest of the family.

"If you can imagine someone reaching in and ripping your heart right out of your body," said Bonnie Dodson, Robin's mother, sitting on her couch in Newport News Friday afternoon.

Investigators believe Robin and David, along with six other young people were likely targeted by the same killer in the 1980's... now known as the "Colonial Parkway Killer."   Recently, under pressure from the families and the media, the FBI agreed to take a fresh look at the unsolved cases and the Chief Medical Examiner of Virginia has been re-examining old evidence with new DNA tests.  Friday afternoon, Dr. Leah Bush told WAVY.com she is half-way through reviewing the unsolved cases and has already contacted two of the families with the results.  Dr. Bush says her office is continuing to work on the remaining cases and she will contact those families as soon as possible.  That could take several more weeks.   But, it's giving new hope to grieving families that have felt forgotten for many years.

Looking at a picture of her daughter, Dodson said, "Don't give up baby. We haven't forgotten you. You are in our hearts and prayers. She knows what happened. I just wish she could let us know."

Robin is never far from her mother's mind. "Seeing a little girl with blonde hair running in a sundress and I think well, there's Boo-Boo because that was her nickname," said Dodson.

Robin's older sister Janette Santiago said, "I miss her, a lot. She would have been 36. I wonder how many kids she she would have had."

Robin's family is also hoping to connect with the other "Colonial Parkway" families who share their same pain.