Missy Woods DNA Scandal: The Trust Question Colorado’s Sentencing Leaves Behind

Twenty-Nine Years, One Reputation

Clutch first covered this case in January 2025, when Woods was initially charged and early reporting put the count in the hundreds. The formal charging document from the First Judicial District Attorney’s Office set the actual number at 102 felony counts, 52 for forgery, 48 for attempting to influence a public servant, one for first degree perjury, and one for cybercrime. What has changed since that first piece is not the scale of the problem. It is that Woods has now pleaded guilty and been sentenced, and the full shape of the institutional failure behind her conduct is on the record.

Yvonne Woods spent 29 years at the Colorado Bureau of Investigation, most of it at the agency’s Denver area laboratory, where she became one of the lab’s most prolific DNA scientists and built a reputation for closing cases faster than her colleagues. She joined CBI in January 1994. She was still there in September 2023, when a student researcher working on an unrelated project reviewing unsubmitted sexual assault kits noticed that quantification data was missing from a case Woods had handled back in 2018.

CBI opened an internal affairs investigation within weeks. Because the matter involved its own employee, the agency asked an outside agency, the South Dakota Division of Criminal Investigation, to run a parallel criminal investigation. Woods was placed on administrative leave on October 3, 2023, and retired in lieu of termination the following month. She never returned to the lab.

What Ten Years Doesn’t Undo

CBI is still reviewing more than 10,000 cases Woods worked across her career. As of the last public count, 1,045 had been flagged for problems ranging from deleted results to reports stating no male DNA was found when testing had actually turned some up. State officials told Colorado Public Radio that more than 400 of the roughly 1,100 flagged cases were sexual assaults. The Denver Police Department is separately reviewing 422 sexual assault kits it submitted to CBI over a twelve year span, testing Woods herself performed on many of them.

The cost shows up case by case. Michael Clark spent more than a decade in prison for a 1994 murder before independent retesting found inconsistencies in the DNA analysis Woods originally performed, and a judge vacated his conviction in 2025. Prosecutors have said they intend to retry him. In two separate homicide cases, prosecutors offered plea deals carrying lighter sentences than a trial conviction would likely have brought, because they were afraid that putting Woods’ DNA work in front of a jury could produce an acquittal instead. Last month, a Weld County judge dismissed a child sexual assault case, pointing not only to Woods’ testing but to the agency’s own failure to stop her sooner. At sentencing, a deputy district attorney described three cases the office never prosecuted at all: the assault of a young child in Pueblo, a rape reported in Rocky Mountain National Park, and the assault of an elderly woman in a nursing home. In each, Woods reported no DNA was found. There was.

Reviewing the damage has already cost Colorado more than $11 million, an estimate that is roughly two years old with no updated public figure since. A restitution hearing is set for November 12, 2026. Last year, state lawmakers passed a bill, prompted directly by the Woods case, creating new statewide procedures for reporting forensic lab misconduct. Woods herself told investigators she struggled to explain her own conduct: “What’s going on in my brain that’s making me do this?”

Could This Happen Here?

Michigan’s forensic testing runs mainly through two accredited public labs, the Michigan State Police Forensic Science Division, the state’s largest provider with laboratories across Michigan, and the Oakland County Sheriff’s Office lab. Both hold the same international ISO/IEC 17025 accreditation CBI held. Michigan State Police has said it has maintained that accreditation continuously since 1984. That accreditation is essentially the entire oversight model. Colorado’s lab was accredited too, for the entire decade Woods was manipulating results underneath that accreditation.

Michigan has had this argument before. In 2018, a state legislator proposed an independent oversight commission covering both accredited labs. Michigan State Police opposed the bill and argued its accreditation record was sufficient on its own. A defense attorney who had pushed for outside review of the labs years earlier put the underlying problem plainly: “There are no regulatory powers and there is no accountability.” A state task force on forensic science later recommended some version of an independent commission model of its own. As of this writing, Michigan still has no standing, independent body with authority to audit either lab the way Colorado was ultimately forced to audit CBI, after the damage was already done.

What You Can Do If This Touches Your Case

None of this is unique to Colorado, and none of it requires waiting for the next scandal to surface before acting. Anyone with a pending case or a past conviction resting heavily on DNA testimony can ask, in writing, which analyst performed the work and whether that analyst has ever been the subject of an internal review, since Woods’ case shows that information was routinely withheld from the very people it affected most. When a conviction turns on a single analyst’s finding, an independent retest at an outside accredited lab is a reasonable request rather than an accusation, and a Colorado court granted exactly that request in the Michael Clark case. Victims whose sexual assault kits were tested years ago can ask their local prosecutor’s office directly whether the analyst who handled their kit has ever faced an internal review, rather than waiting to find out from a news report.

The Transparency Every State Should Require