For 15 years, a Tulsa family has been searching for answers in the brutal murder of their loved one.

64-year-old Paula Bogle was found stabbed to death in her own home in 2010.

Police believe she knew her killer but despite years of investigation, no one has ever been arrested.

Fifteen years have passed, but for Glenna Mize, the memory of that December day remains painfully vivid the day she discovered her beloved aunt Paula had been murdered.

"I just went into the house and I got a call from the person that was living there with her. His name was Gerald and said that my aunt was not responding and so I needed to go over so I went over and when we go there, she was sitting in her rocking chair," Mize said.

"She had been stabbed in the neck and she was dead, she was already dead."

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