CHEHALIS, Wash. -- Jurors have rendered a stunning verdict in an 11-year-old mystery death.

The jury on Tuesday decided unanimously that Lewis County Coroner Terry Wilson was wrong when he ruled the death of former state trooper Ronda Reynolds was suicide.

The KOMO 4 Problem Solvers first broke the story last year, exposing numerous red flags and inconsistencies that investigators found in the case.

Tuesday, the jury was decisive reaching a unanimous verdict in just under five hours of deliberations. They didn't just say Wilson was wrong; they said he was "arbitrary and capricious" when he determined Reynolds committed suicide.

It was everything Reynolds' mother Barb Thompson hoped for.

"I put my faith and trust in the jury and they didn't let me down," she said.

Nearly 11 years ago, Reynolds was found dead of a gunshot in her Lewis County home. Lead investigator, former detective Jerry Berry, thought the evidence added up to murder. But over Berry's objections, the Lewis County Sheriff's Office closed the case and Wilson ruled it suicide.

Since then, Thompson has fought to overturn that ruling. After listening to former investigators and firearms and medical experts, the jury agreed Ronda did not kill herself.

"It means peace," said Thompson.

But in this unprecedented trial, what's formally called a "judicial review," the judge would not allow the jury to say if they thought Ronda was murdered.

So where does Thompson go from here?

"For Barb this is a great win," said her attorney Royce Ferguson. "As far as the paperwork goes, what the coroner does, it may not make a difference."

Wilson refused to answer our questions, just as he did throughout our investigation. He only said he will not change Reynolds' death certificate.

At the moment, Thompson isn't worrying about that. She's thankful to all the people who've donated their time and expertise to this cause, and she has a message for the jurors who have given her peace of mind:

"Thank you, thank you," she said. "It was brave - I mean, they took a big step, but it's the truth and all I wanted was the truth."

Thompson has a couple of different options: She can file a new motion asking the judge to force the coroner to change the death certificate, pressure the sheriff to re-open the investigation, or decide to end it here with today's victory figuring that she's finally gotten a measure of justice for her daughter.