Former Crime Lab Analyst Gets 10 Years After DNA Scandal Upends Colorado Cases

A former Colorado crime lab analyst is heading to prison for 10 years after authorities uncovered manipulated DNA data that forced officials to examine hundreds of criminal cases. Yvonne “Missy” Woods, a longtime forensic analyst with the Colorado Bureau of Investigation, pleaded guilty to multiple crimes connected to her handling of evidence, including perjury, forgery and cybercrime. The fallout has already reached murder convictions and homicide prosecutions, creating serious questions about cases that relied on her laboratory work.

Woods resigned in 2023 after a decades-long career, but concerns about her work had reportedly surfaced years earlier. Investigators accused her of altering data, deleting information that showed problems during testing and failing to properly document tests performed on evidence. Now, with one murder conviction already vacated and other defendants challenging their cases, a scandal that began inside a forensic laboratory has grown into a major problem for Colorado’s criminal justice system.

Woods Will Spend 10 Years In Prison

A state judge sentenced Woods to 10 years in prison on Tuesday after she pleaded guilty to four serious offenses connected to her conduct as a forensic analyst. She had faced a possible sentence ranging from eight to 16 years, while dozens of additional counts were dismissed as part of the plea agreement. The charges included perjury, attempting to influence a public servant, forgery and committing a cybercrime, bringing the criminal case against her to a sentencing hearing after years of questions surrounding her laboratory work.

During the hearing, Woods apologized and acknowledged that the evidence placed in her hands could affect far more than a single investigation. “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,” Woods said. Her statement came as officials continue dealing with the consequences of evidence that prosecutors can no longer treat with the same confidence they once placed in forensic testing.

The investigation began in September 2023 after an intern discovered missing information in a case Woods had handled in 2018. That discovery prompted investigators to examine her work more closely, eventually uncovering problems involving data and documentation. According to an arrest affidavit, Woods allegedly told investigators at one point that she had changed data to complete cases more quickly, adding another troubling detail to a scandal involving evidence used in serious criminal prosecutions.

The Investigation Exposed Years Of Warning Signs

The most troubling detail may be how long concerns about Woods’ work had existed before the criminal investigation began. A Colorado Bureau of Investigation internal affairs report released in 2024 found that questions about her testing had surfaced more than a decade earlier. A worker questioned her handling of evidence as early as 2014, while Woods was temporarily removed from DNA cases in 2018 after allegations of data manipulation.

Those earlier incidents have taken on greater significance because authorities later identified problems across a much larger collection of cases. Investigators accused Woods of changing information and then altering data to conceal the changes. They also said she deleted data showing that she had failed to troubleshoot problems during testing and did not thoroughly document tests performed in individual case records.

The affected cases involved homicide, sexual assault, robbery and other crimes, meaning the consequences extended into some of the most serious prosecutions handled by the state. Prosecutors were forced to review hundreds of cases connected to Woods as officials attempted to determine which convictions and prosecutions might have been affected. The review has created an enormous task for a justice system that must examine old evidence while dealing with cases that may already be years or decades old.

One Murder Conviction Has Already Been Vacated

The consequences have already changed the outcome of at least one murder case. Michael Clark was released from prison in 2025 after his lawyers argued that DNA evidence connected to his conviction had been mishandled by Woods. His murder conviction was vacated, and prosecutors have said they intend to seek a retrial, leaving the case caught between an earlier conviction and new questions about the evidence that helped support it.

Two other homicide cases were affected in a different way when defendants received lesser sentences through plea agreements. Prosecutors were concerned that Woods’ involvement could create problems if those cases went to trial because defense attorneys could challenge the reliability of DNA evidence associated with her work. That concern meant prosecutors had to consider the possibility that cases once viewed as strong could become much harder to prove in court.

Other convictions across Colorado have also been challenged because Woods was involved in the underlying forensic work. Each case now requires a closer examination of what evidence she handled, how that evidence was tested and how much the disputed work contributed to the final outcome. The result is a complicated review process that can affect defendants, prosecutors, victims and families long after the original criminal proceedings ended.

Why Manipulated DNA Data Can Cause Massive Problems

DNA evidence can carry enormous weight in criminal cases because biological material may connect a person to an object, location or crime. Yet a DNA result depends on the procedures used to produce it and the records showing what happened during testing. When laboratory data is altered or important information disappears, attorneys and courts can lose the ability to independently determine whether the evidence was handled and interpreted properly.

That creates a difficult situation when old convictions depend partly on forensic results. Prosecutors may have other evidence available, but they still need to determine whether the remaining evidence can support a conviction without relying on compromised laboratory work. Defense attorneys, meanwhile, can challenge the integrity of the testing process and ask courts to reconsider conclusions reached years earlier.

The Colorado cases demonstrate how quickly a laboratory problem can spread through the justice system. A missing piece of information can lead investigators to review one case, which can then trigger a broader examination of other cases handled by the same analyst. When hundreds of cases become involved, the consequences can include new hearings, altered plea agreements, overturned convictions and substantial public expense.

Colorado Faces A Costly Trust Problem

Officials have said the response to Woods’ conduct could cost more than $11 million. That figure reflects the scale of the work required after questions were raised about the reliability of evidence connected to her cases. Prosecutors and investigators have had to identify affected files and determine whether the problems were serious enough to change the legal position of defendants whose cases involved Woods’ testing.

The Colorado Bureau of Investigation has also pursued reforms within its laboratories as officials work to restore confidence in the system. Bureau Director Armando Saldate said the misconduct should not define the agency’s broader workforce. “The actions of one individual never define this organization, and they do not define the dedicated public servants who continued showing up every day with integrity,” Saldate said in a statement following the sentencing.

Rebuilding confidence will require more than identifying the individual responsible for the misconduct. The internal affairs findings show that concerns about Woods’ work appeared years before the investigation that ultimately resulted in criminal charges. That history places greater attention on oversight, documentation and the internal systems designed to identify questionable practices before disputed evidence reaches prosecutors, defense attorneys and courtrooms.

Hundreds Of Cases Could Carry The Scandal Forward

Woods’ prison sentence settles the question of what punishment she will face for the crimes to which she pleaded guilty, but it does not settle what happens to the defendants, victims and families connected to the cases in which her work appeared. Those questions will continue to be handled individually as courts examine challenges and prosecutors determine whether evidence remains strong enough to support existing convictions.

The cases affected by the scandal involve serious crimes, which makes every review particularly difficult. A conviction can represent years of work by investigators and prosecutors, while victims and their families may have spent years believing that a case had finally been resolved. At the same time, defendants have a fundamental interest in knowing that the evidence used against them was properly tested, accurately recorded and fairly presented.

The fallout also shows why forensic records remain important long after investigators leave a crime scene. Laboratory documentation can stay inside a criminal case for years, and the people relying on those records may never meet the analyst who produced them. When those records are compromised, the consequences can reach defendants who are still challenging convictions and families who thought their cases were already finished.

The Sentence Ends Woods’ Case, But Not The Damage

The 10-year sentence marks a major turning point in the criminal case against Woods, but Colorado’s review of affected criminal cases remains a separate challenge. Some defendants may continue contesting convictions, while prosecutors must determine whether individual cases can withstand scrutiny without relying on questionable DNA work. The legal consequences of the scandal will therefore continue long after Woods begins serving her sentence.

Forensic science is supposed to provide courts with evidence that can withstand careful examination. When confidence in that process is damaged, repairing individual cases becomes only part of the task. Colorado now has to show that concerns raised inside its crime laboratories will be identified earlier and handled before questionable evidence can shape another person’s future.