There is a comforting narrative about cold cases: they go unsolved because the evidence is not there. The trail went cold. The technology did not exist. The witnesses disappeared.
Some of that is true. But the larger truth is more uncomfortable: many cold cases go unsolved because solving them is not a priority. The evidence exists. The technology exists. What does not exist is the institutional will to allocate resources to cases that do not generate political capital, media attention, or departmental prestige.
This is not a conspiracy. It is a system of incentives that produces predictable outcomes.
The Crime Lab Backlog
In 2015, a landmark investigation by USA Today found that more than 70,000 sexual assault kits were sitting untested in police evidence rooms across the country. Subsequent investigations by the Joyful Heart Foundation and other organizations estimated the true number to be closer to 400,000. DNA evidence that could identify rapists and serial offenders was collecting dust on shelves because crime labs did not have the funding or staffing to process it.
The problem extends well beyond sexual assault kits. The National Institute of Justice has documented persistent forensic backlogs in DNA analysis, toxicology, firearms examination, digital forensics, and trace evidence. The Bureau of Justice Statistics reported that publicly funded crime labs had a cumulative backlog of over 570,000 requests. The median turnaround time for DNA analysis in some labs exceeds 90 days. For less prioritized evidence types, the wait can extend to a year or more.
This backlog is a policy choice. The federal government spends billions annually on law enforcement grants, but forensic laboratory funding represents a small fraction. The Paul Coverdell National Forensic Science Improvement Grants Program, the primary federal funding mechanism for state and local crime labs, has been funded at roughly $12 to $15 million per year -- a rounding error in the context of a federal law enforcement budget that exceeds $30 billion.
When those sexual assault kits in Detroit were finally tested between 2009 and 2016, they identified over 800 serial offenders -- rapists who had gone on to commit additional crimes while their DNA sat unprocessed. Each additional victim was a preventable failure.
The Victim Hierarchy
Not all victims receive the same investigative effort. Researchers have documented a persistent hierarchy in how cases are prioritized, and the pattern tracks closely with race, class, and social status.
A 2020 study published in the Journal of Criminal Justice examined clearance rates for over 400,000 homicides and found that cases involving white victims were significantly more likely to be solved than cases involving Black or Hispanic victims. Cases involving female victims received more investigative resources than cases involving male victims. Cases in affluent neighborhoods were prioritized over cases in low-income areas.
The media amplifies this disparity. The phenomenon known as "Missing White Woman Syndrome" -- a term coined by the late journalist Gwen Ifill -- describes the disproportionate media attention given to missing or murdered young, white, middle-class women compared to victims who are male, older, or people of color. Media attention drives public pressure. Public pressure drives investigative resources. The cycle reinforces itself.
The result is that thousands of victims -- disproportionately poor, disproportionately Black and Latino, disproportionately male -- have their cases effectively abandoned. Not because the cases cannot be solved, but because the institutional and political incentives to solve them are weak.
Departmental Politics and Turnover
Homicide investigations are conducted by local police departments, and local police departments are political institutions. Chiefs are appointed by mayors. Budgets are set by city councils. Promotions and assignments are influenced by departmental politics.
Cold case units, where they exist, are frequently the first casualty of budget cuts. They do not generate the kind of visible, immediate results that politicians and police administrators can point to as evidence of effectiveness. Solving a 20-year-old murder does not reduce this quarter's crime statistics. It does not generate the same media coverage as a fresh arrest. It is, in bureaucratic terms, a low-return investment.
Turnover compounds the problem. The average tenure of a police chief in a major American city is approximately three to five years. When leadership changes, priorities change. Cases that one administration considered important may be deprioritized by the next. Detectives rotate in and out of homicide units. Case files are transferred, stored improperly, or lost.
A 2019 report by the Police Executive Research Forum found that many departments do not have formal cold case units at all. Cases simply age out of the active caseload and are stored in filing cabinets or evidence rooms. No one is assigned to them. No one reviews them. They exist in a bureaucratic limbo -- not closed, not investigated, just forgotten.
The Technology Gap
Modern forensic technology can solve cases that were impossible to crack a decade ago. Genetic genealogy, advanced DNA analysis, digital forensics, and database cross-referencing have produced extraordinary results in the cases where they have been applied.
The problem is that these tools are expensive and require specialized training. Small and mid-size departments -- which handle the majority of homicide cases in the United States -- often cannot afford them. Genetic genealogy testing costs several thousand dollars per case. Advanced DNA techniques like touch DNA analysis or familial DNA searching require equipment and expertise that most local labs do not have.
Federal programs exist to subsidize these costs, but they are oversubscribed and bureaucratically complex. Departments in smaller jurisdictions may not have the administrative capacity to navigate the grant application process. The result is a two-tiered system: well-funded departments in large cities have access to cutting-edge forensic tools, while departments in rural and low-income areas work with technology that is a generation behind.
What Would It Take to Fix This
The systemic failures that produce unsolved cases are not mysterious. They are well documented by criminologists, forensic scientists, and law enforcement professionals. The solutions are equally well known:
- Fund crime labs. Eliminate forensic backlogs by increasing federal and state funding for publicly funded laboratories. Process every rape kit. Test every DNA sample. The evidence is there -- it just needs to be analyzed.
- Staff cold case units. Every department with unsolved homicides should have dedicated cold case investigators with manageable caseloads. This requires sustained funding, not one-time grants.
- Equalize resources. Federal programs should prioritize departments in under-resourced jurisdictions. Victims in rural Mississippi deserve the same forensic capabilities as victims in Manhattan.
- Reduce turnover. Implement institutional knowledge management so that when detectives leave, their case knowledge does not leave with them. Case files should be digital, searchable, and continuously accessible.
- Enable citizen participation. Build infrastructure for the public to contribute to cold case investigation safely and ethically. Not as a replacement for law enforcement, but as a supplement to it.
None of this is technically difficult. All of it is politically inconvenient. Funding crime labs means taking money from other law enforcement priorities. Staffing cold case units means acknowledging that current staffing is inadequate. Equalizing resources means confronting the racial and economic disparities in the criminal justice system.
Until these changes happen, the backlog of unsolved cases will continue to grow. Families will continue to wait. And the question hanging over the criminal justice system will remain the same: if the evidence is there, if the technology is there, if the solutions are known -- why is nobody doing it?
The answer, as with most institutional failures, is that nobody with power has been forced to care. That is what needs to change.