The charges filed Thursday by the Salt Lake District attorney come nearly two years after the death of Uta Von Schwedler, a former University of Utah researcher.
Her former husband, Dr. John Brinkman Wall was charged with first degree murder and aggravated burglary.
In September, 2011 Schwedler was found dead of a drug overdose in her bathtub.
“That's what medical examiner's report said which she didn't have a prescription for and she didn't take,” says her close friend Niles Abramson.
Wall was investigated but charges were never filed.
But police continued looking into the case after his oldest son pressured police. The 18-year old moved out of the house and unsuccessfully tried removing his siblings from Wall’s care.
The custody of the children appeared to be at the heart of the bitterness between the couple. Wall had custody but a Judge gave Schwedler more visitation rights.
According to court documents police soon learned Wall told a friend she's causing problems and "would it be all right if UTA wasn't around anymore."
Prosecutors say they have new DNA evidence.
“The DNA was found under her fingernails,” says Sim Gill the Salt Lake District Attorney. “The DNA found in materials inside the house was something different."
Police also discovered Wall wrote a prescription of Xanex to his mother and even picked it up for her. It was same drug found in Schleder’'s system.
“It's been 19 months and we've all been waiting for this,” says Abramson.
He also says the two youngest children continued living with Wall. But after his arrest are in state custody.