PROVO -- Opening arguments are set to begin in the trial of a Utah doctor charged with the murder of his wife.
The 57-year-old doctor, Martin MacNeill, was charged in August 2012 - nearly five years after his wife was found face-down in a bathtub at the couple's Pleasant Grove home, about 35 miles south of Salt Lake City.
Prosecutors will try to prove that MacNeill gave his wife a lethal combination of drugs while having an affair with another woman. The doctor's attorney, Randy Spencer, has said there is no evidence tying the doctor to the murder. Medical examiners couldn't determine how 50-year-old Michele MacNeill died.
It wasn't until his release from a federal prison in Texas for fraud that prosecutors moved to file charges of murder and obstruction of justice.