A little after 1:00 a.m. on July 16, 2012, a young girl frantically called 911 from a neighbor’s house where they lived in the Houston suburb of Humble, Texas.
Keri Murphy, age 15, said she heard someone break into their house through the back door. Then the screaming started. When police entered Keri’s home, they found the body of 48-year-old Mary Ann Murphy. She had been stabbed more than 70 times.
While conducting a search of Mary Ann’s home, police saw a broken window by the back door but noted it wasn’t big enough for anyone to crawl through. It was also too far from the door, meaning no one could have reached in and grabbed the handle.
The house itself did not appear to be burglarized, which left investigators confused as to what the motive could possibly be. When they were eventually led to a young girl by the name of Rebecca Keller , things fell into place.
Where is Rebecca Keller now?
Keller is serving out a 60-year sentence at the William P. Hobby Unit , a women’s prison in Marlin, Texas. She pleaded guilty to first-degree murder in October 2012. The gruesome story of Mary Ann’s murder was featured in an episode of Investigation Discovery’s Mean Girl Murders and goes into how Keller came to know Keri, which ultimately led to the two of them hatching a plan to kill her mother.