The first week of the Kouri Richins murder trial delivered the prosecution's key witness — and the defense's demolition of her credibility. Carmen Lauber claims she bought fentanyl for Kouri four times before Eric Richins died. But she was using meth. She got immunity from three jurisdictions. Her supplier now contradicts her. She admitted confusion under cross-examination. The jury has to decide whether any of that matters. Robin Dreeke explains how to read what's actually true.

Dreeke spent 21 years with the FBI, including leading the Counterintelligence Behavioral Analysis Program. Detecting deception and assessing credibility in high-stakes environments was his job. He understands what behavioral indicators reveal whether a witness with credibility problems is still reliable at the core — or constructing a narrative for self-interest.

The supplier reversal is central. Robert Crozier originally told detectives he sold fentanyl to Lauber. On the stand Friday, he said it was oxycodone and that he was "detoxing and out of it" during his original statement. When a witness changes their story years later under oath, Dreeke explains what determines which version is more likely true.

Then there's Kouri herself. She's sat through five days of testimony describing how she allegedly murdered her husband. She's maintained composure throughout. Some read that as guilt. Others read it as the numbness of someone falsely accused. Dreeke identifies the specific micro-behaviors that would distinguish genuine shock from a performance that's been rehearsed for nearly four years.

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