A Colorado dentist was sentenced to life in prison on Wednesday for killing his wife by lacing her protein shakes with poison before delivering a fatal dose of cyanide.

District Judge Shay Whitaker sentenced James Craig to life without the possibility of parole, the mandatory sentence for first-degree murder in Colorado. 

He was convicted of murder and other charges earlier in the day by a jury.

Craig poisoned his wife Angela Craig over 10 days in March 2023. 

When those attempts failed, prosecutors said the dentist gave his wife a final dose of cyanide as she was taken to hospital in suburban Denver with symptoms that puzzled doctors. She was declared brain-dead soon after.

In addition to murder, Craig was found guilty of trying to cover up the killing by asking others to fake evidence and testimony that would make it appear that Angela had killed herself or wanted to frame him for her death.

He was found guilty of asking his daughter to make a fake video of her mother asking to be poisoned and of trying to get one inmate to kill the lead detective investigating his wife’s death, among other things.