Utah doctor Martin MacNeill was found guilty of his wife's murder in a verdict read early Saturday morning.
MacNeill showed no emotion as he learned his fate, but a yell came from the section where his relatives sat.
He will be sentenced later on the charges of first-degree murder and obstruction of justice, CNN's Ted Rowlands reports.
MacNeill had said his wife's death was an accident.
In the end, jurors believed prosecutors' allegations that MacNeill drugged and then drowned his wife, Michele MacNeill, in the bathtub of their home on April 11, 2007, to be with his mistress.
Michele MacNeill's sister, Linda Cluff, spoke about Michele on "New Day" Monday.
"She was a wonderful sister as well. Growing up with her, she was such an achiever. She was great in school, she was fun loving, had many friends...just had so much potential. We all looked up to her."
CNN's Jean Casarez spoke exclusively with MacNeill's daughter Alexis Somers. She fought to have him convicted for almost 6 years after her mother's death. The defense attacked her credibility saying she hated her father so much because of his cheating. Somers said when she looks at her father she sees "a shell of a man. I just see evil."