But prosecutors say while Baker wove his "web of lies" to keep himself out of prison and make himself look good, Bulls has no motive to be lying now. Her testimony about an affair and keeping quiet about plans to murder Kari Baker make her look worse, not better.
Prosecutor Susan Shafer, in her closing argument, told the jury that Kari Baker had no motive to commit suicide. She said Kari wanted to live for her surviving daughters, had plans to change jobs and despite previous bouts of depression, was getting better -- only to be murdered by her husband.
Baker maintains his innocence and denies killing his wife.
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ABC News' Sarah Holmberg and Hae Kim contributed research for this report.