By Andi Babineau, Eric Levenson, CNN

Centennial, Colorado (CNN) — The fate of James Craig , the Colorado dentist accused of killing his wife with poisoned protein shakes, doctored pills and a lethal injection, is now in the hands of the jury.

Jury deliberations in his murder trial began Tuesday afternoon after the prosecution and defense took turns laying out their closing arguments in the case.

The prosecution argued Craig, 47, poisoned his wife, Angela, in an attempt to escape his failing marriage and then tried to falsely portray her as suicidal, even asking his daughter to help in the plot.

“Angela Craig was innocent. She had no part in her death, and the only person who says otherwise is this man. The person guilty of the ultimate betrayal – her murder,” prosecutor Michael Maur

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