US

Closing arguments set in trial of Utah doctor charged with murder in wife's death

  • Martin MacNeill listens to Gypsy Willis testify during his murder trial in 4th District Court in Provo, Utah Thursday Nov. 7,  2013.  MacNeill is charged with murder for allegedly killing his wife Michele MacNeill in 2007. (AP Photo/The Salt Lake Tribune, Al Hartmann, Pool)

    Martin MacNeill listens to Gypsy Willis testify during his murder trial in 4th District Court in Provo, Utah Thursday Nov. 7, 2013. MacNeill is charged with murder for allegedly killing his wife Michele MacNeill in 2007. (AP Photo/The Salt Lake Tribune, Al Hartmann, Pool)  (The Associated Press)

  • Ergonomics expert Brett Besser testifies at Martin MacNeill's murder trial in 4th District Court in Provo, Utah, Thursday Nov. 7,  2013. He testified about the stress to lower back and difficulty in lifting a heavy weight from a bathtub. (AP Photo/The Salt Lake Tribune, Al Hartmann, Pool)

    Ergonomics expert Brett Besser testifies at Martin MacNeill's murder trial in 4th District Court in Provo, Utah, Thursday Nov. 7, 2013. He testified about the stress to lower back and difficulty in lifting a heavy weight from a bathtub. (AP Photo/The Salt Lake Tribune, Al Hartmann, Pool)  (The Associated Press)

  • Ergonomics expert Brett Besser, center, testifies at Martin MacNeill's murder trial in 4th District Court in Provo, Utah, Thursday, Nov. 7,  2013. He explains to defense lawyer Randy Spencer, left, stress to lower back and difficulty in lifting a heavy weight from a bathtub.  Judge Derek Pullan watches the demonstration. (AP Photo/The Salt Lake Tribune, Al Hartmann, Pool )

    Ergonomics expert Brett Besser, center, testifies at Martin MacNeill's murder trial in 4th District Court in Provo, Utah, Thursday, Nov. 7, 2013. He explains to defense lawyer Randy Spencer, left, stress to lower back and difficulty in lifting a heavy weight from a bathtub. Judge Derek Pullan watches the demonstration. (AP Photo/The Salt Lake Tribune, Al Hartmann, Pool )  (The Associated Press)

Jurors will hear closing arguments Friday in the trial of a Utah doctor charged with killing his wife.

Prosecutors are accusing Martin MacNeill of hounding his wife to get a face-lift, then leaving her to die in the tub heavily drugged with painkillers, Valium and sleeping pills.

A cause of death was never established. Defense lawyers will argue Michele MacNeill died of natural causes. They contend she had a heart attack and fell into the tub in 2007.

The judge says jury instructions and closing arguments will take up Friday morning before the case goes to jurors in the afternoon.

The highlight of the three-week trial was a mistress whom prosecutors argued was MacNeill's motive for getting rid of his wife.

Gypsy Willis says the affair ended years ago, and she doesn't know anything about how the doctor's wife died.