The prosecution's motive case in the Kouri Richins murder trial just got its most detailed presentation yet — and it came from a forensic accountant armed with hundreds of thousands of documents.

Day seven of the trial in Park City, Utah brought Brooke Karrington to the stand, where she spent the full day detailing the financial implosion prosecutors say drove Kouri Richins to allegedly poison her husband, Eric, with a lethal dose of fentanyl in March 2022.

The numbers Karrington laid out were specific and relentless. A business account "perpetually in the hole." Seventy-seven overdraft transactions in a single month. Four payday lenders. $7.5 million in total debt. $80,000 in monthly payments. A $60,000 loan at 15% weekly interest that defaulted and triggered a lawsuit. An Iron Bridge loan deadline falling four days after Eric's death. A $45,000 wire from a client that hit a negative account and was immediately redirected to a payday lender.

And a $2.9 million mansion purchased the day after her husband died — with nothing left for renovations, listed for sale a week later, and eventually foreclosed.

After Eric's death, Kouri received $1.35 million in life insurance proceeds. It was gone in three months. By September 2022, she had $800 left.

The defense argued the financial picture proves nothing about the murder charge and that Eric had full access to the accounts in question. Kouri Richins has pleaded not guilty and is presumed innocent under the law.

But the prosecution's financial case is now fully on the record — and the jury has seen every number.

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