A former US doctor accused of hounding his wife to get a face-lift so he could kill her with a lethal combination of prescription drugs acted erratically the day she died and claimed she had wanted the surgery, prosecutors said in opening statements at the murder trial.
In addition, Martin MacNeill told fellow inmates after his arrest that his wife was a "bitch;" he was glad she was dead; and authorities couldn't prove he killed her, prosecutor Sam Pead told jurors.
Prosecutors have said the killing was the climax of a twisted plot by MacNeill to carry on an affair with his mistress, who MacNeill invited to his wife's funeral and asked to marry him weeks later.
The case has shocked the small Utah town of Provo, a Mormon community 72 kilometers south of Salt Lake City, and captured national attention because the defendant was a doctor.
Pead depicted a scene of bizarre behavior that began when MacNeill discovered his lifeless wife in a bathtub and called authorities to his house in April 2007.
"'Why did she have the surgery?"' Martin MacNeill yelled in front of police and paramedics, according to Pead.
"'Why did she take all of those medications? I told her not to do it. I'm a doctor. She's dead. I've been a bishop. I pay tithing, and this is the way you repay me?"'
MacNeill was referring to his former leadership position in The Church of Jesus Christ of Latter-day Saints and his payment of dues. He has since surrendered his medical license.
Defence attorneys told jurors that Michele MacNeill died from heart disease, not from anything Martin MacNeill had done.
"Martin has made poor choices in his life. He had affairs during his marriage," defence lawyer Susanne Gustin said in her opening statement.
"Shortly after his wife passed away, he brought Gypsy Willis into his home," Gustin said. "We may think he's a total jerk and disgusting. And that's natural. But decide this case on the facts rather than the emotion."
MacNeill, 57, was charged in August 2012, nearly five years after his former beauty queen wife was found in the couple's home.
Prosecutors said they will try to prove that MacNeill got a plastic surgeon to prescribe a powerful set of neurological drugs for her recovery that left her comatose in the bathtub.
However, medical examiners couldn't determine how 50-year-old Michele MacNeill died. They initially ruled she died of natural causes, possibly from a heart disorder, then changed the finding to undetermined.
The MacNeills had eight children, and their oldest daughters have been outspoken in their belief that their father killed their mother.
Rachel MacNeill and Alexis Somers have gone on national TV with their claims and sat in his court hearings holding up photographs of their mother. They insist his motive was the affair.
The doctor later went to prison on fraud charges, and it wasn't until his release that prosecutors moved to file charges of murder and obstruction of justice.
Willis also served prison time for fraud. The allegations included forging a document that said they were married on April 14, 2007 - the day of Michele MacNeill's funeral.