OZARK, Mo. -- A woman from Nixa who helped kill a former prosecuting attorney last year by injecting him with cocaine received a 13-year prison sentence on Thursday.  Crystal Broyles pleaded guilty for second-degree murder on Oct. 24 for the death of David Masters.

  Investigators said Broyles is one of two people who injected David Masters with a lethal dose of cocaine on March 1, 2005, and dumped his body next to the James River west of Nixa.  Detectives believe Thomas Naumann and Broyles tied Masters to a chair with plastic ties over a two-day period, threatened him with a gun and injected him with cocaine. An autopsy showed Masters’ body had 40 times a lethal dose of cocaine in his body.

   Masters, 52, was a prosecuting attorney in Macon County, Mo., for eight years in the 1990s.  Friends and family members say something happened that caused him to abandon his life in north Missouri. He was the father of seven.  Investigators said Broyles, Masters and Naumann were roommates in Nixa who got in a dispute because the other two said Masters owed them money for rent.

  Christian County Prosecuting Attorney Ron Cleek charged Broyles, Naumann and Broyles' sister, Brandi Storment of Bolivar, with first-degree murder a week after Masters' death but later dropped the charge against Storment.  Broyles went to trial in October with a jury from Rolla.  Two days into the trial in Ozark, Broyles pleaded guilty to the reduced charge in return for a 12- or 13-year prison sentence.  The range of prison sentences for second-degree murder is 10 years to life (30-years).

  At the sentencing hearing on Thursday, one of Masters' daughters testified in a victim impact statement that she blames Cleek for not being able to get a first-degree murder conviction, which would have allowed Circuit Judge John Moody of Mansfield to give Broyles a life prison sentence with no chance of parole.  Cleek said he offered the plea agreement because he wasn't sure the jury would convict Broyles for first-degree murder.

  Naumann's case has no trial date set, according to online court records.  He's still charged with first-degree murder.