PROVO, UT (CNN) – Jury selection begins Tuesday for Martin MacNeill.
The prominent Utah doctor is accused of killing his wife of nearly 30 years in 2007 so he could be with his mistress.
As Jean Casarez explains, some of the most damaging testimony against him could come from his own children
Martin and Michele MacNeill lived what seemed to be a charming life. He was a prominent doctor and lawyer and she was a doting mother of eight children, yet their almost 30 marriage came to a tragic end one April night in 2007
"My wife's fallen in the bathtub," said Martin MacNeill.
"Who's in the bathtub?" said the 911 operator.
"My wife!" said Martin MacNeill.
"Okay. Is she conscious?" said the 911 operator.
"She's not! She..." (screaming unintelligible), said Martin MacNeill.
"Sir I can't understand you. Can you calm down just a little bit?" said the 911 operator.
"I need help!" said Martin MacNeill. "She's under the water. I need an ambulance."
Michele was found dead in her bathtub in their home in Pleasant Grove, UT by their youngest daughter Ada, who was 6-years-old at the time.
Now MacNeill stands accused of murdering his wife six years after her death, allegedly killing her so he could be with his mistress. But MacNeill said his wife accidentally died.
Prosecutors say they will show evidence that he poisoned her with an overdose of medication when she was recovering from a facelift, a facelift prosecutors say he forced her to have.
Medical examiners found a powerful cocktail of drugs, including Valium, Percocet and Ambien in her system.
"I will say that we are aware of the challenges we face in this case," said prosecutor Chad Grunader. "But we make no excuses."
Since her mysterious death, Michele's two oldest daughters have been showing up for pretrial hearings in support of their mother and accusing their father of the unthinkable.
"My mother was a wonderful human being," said Rachel MacNeill. "She deserves justice. She should never have trusted my father."
Among the state's star witnesses will be at least one of his daughters, part of the effort to send him away for life.
Prosecutors say MacNeill used his medical knowledge in a plot to kill his wife.
The motive, prosecutors say, was MacNeill's year-long affair with Gypsy Willis, who moved into the MacNeill home as a nanny shortly after Michele's death.
"My mom deserves this, said Michelle MacNeil. "She deserves justice. My father orchestrated this whole plan and how to murder my mother."
MacNeill has pleaded not guilty to charges of first degree murder and obstruction of justice.
He insists his wife's death was an accident.
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