Former Colorado Bureau of Investigation forensic scientist Yvonne “Missy” Woods, 66, was sentenced to 10 years in state prison after pleading guilty to charges stemming from a decades-long DNA testing scandal that compromised more than 1,000 criminal cases.
https://www.youtube.com/watch?v=-MjJvaHBgmg
Woods entered her guilty plea to multiple charges including perjury, attempting to influence a public servant, forgery, and committing a cybercrime, following an internal CBI inquiry that began before her quiet resignation in late 2023 after 29 years at the state crime lab.
A comprehensive CBI review found Woods had manipulated or compromised test data in over 1,000 forensic cases between 1994 and 2023. State investigators determined she did not fabricate entire DNA profiles from scratch or falsely substitute foreign DNA into evidence samples. Her violations instead centered on deleting data, bypassing validation protocols, tampering with forensic results, and omitting critical control results during testing procedures.
The systematic corner-cutting directly breached international accreditation standards and state laboratory guidelines, prosecutors stressed during court proceedings. They characterized her calculated manipulation as an egregious breach of public trust, trading scientific accuracy for expedient results and manufactured performance metrics.
Defense counsel pushed back, arguing Woods was overwhelmed by crushing workloads and systemic lab pressures. Prosecutors countered that her routine deceit severely harmed both victims and defendants by tainting the pursuit of justice.
The financial fallout has landed heavily on Colorado taxpayers. State lawmakers and prosecutors’ offices were forced to allocate millions of dollars to independent forensic laboratories to re-test and audit thousands of physical evidence samples Woods handled during her nearly three-decade tenure.
The judicial wreckage continues to spread across Colorado. In 2025, a 1994 murder conviction against Michael Clark was officially vacated after prosecutors acknowledged the DNA evidence handled by Woods was unreliable. Other homicide cases have resulted in reduced plea sentences to avoid relying on her tainted work at trial. Ryan Hicks, sentenced to life without parole for a 2014 murder, is among those with appeals still making their way through appellate courts.
Prosecutors, defense attorneys, and judges statewide remain locked in the painstaking, multi-year process of reviewing every conviction touched by her discredited forensic work.
During her statement to the court, Woods acknowledged the scope of her failures.
“For many years I was entrusted with evidence that could have profound consequences for defendants, victims, families and the courts. I failed that responsibility. I am deeply sorry for that failure,” she said.
She continued, adding that she accepted the weight of her actions.
“I take responsibility for the offenses to which I pled guilty, and I know that an apology cannot undo the harm or restore the trust that was lost.”
Woods now begins her decade-long term in state custody while Colorado’s legal system continues grappling with the aftermath of one of the most damaging forensic scandals in state history.
The case emerged after CBI launched its internal inquiry, which led to Woods stepping down from her position in late 2023. The investigation revealed the staggering breadth of compromised cases, forcing a complete re-evaluation of how the state crime lab operated during her tenure and triggering ongoing reforms to prevent similar breakdowns in forensic oversight.