NORTH TEXAS (CBSDFW.COM) – Nearly a dozen people fanned out Tuesday in a far east Dallas neighborhood in the hopes of jogging anyone’s memory. They canvased a number of streets hoping that someone will provide police with information that could lead to the whereabouts of Lisa Stone.

“Unfortunately I believe that someone took her life,” said Tina Wiley-Stringer, one Stone’s friends who has kept the case in the public eye.

Stone was last seen in June of 2010 at her far east Dallas home where she lived with her life partner, Sherry Henry. Henry was featured in an episode of 48 Hours Mystery last year in which she said, “I am not guilty of anything.”

No arrests have been made and Stone’s body was never found.

Friends believe Stone was the victim of foul play and Wiley-Stringer says she asked Dallas police detectives to be available to answer any phone calls should any new leads come in after Tuesday’s highly-publicized walk through the neighborhood.

A national organization called the  CUE Center for Missing Persons is also helping canvass the neighborhood. CUE stands for Community United Effort and is based in North Carolina.

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