A jury found Ernest Cunningham guilty after prosecutors said anger at a former co-worker carried him to the man’s apartment and into a killing.
DENVER, Colo. — Prosecutors say the path to Kelsey Roberts-Gariety’s death began before anyone reached an apartment door, with a firing, an angry former co-worker and a dispute that followed a man home.
That chain ended in court with a 42-year prison sentence for Ernest Cunningham, 53, of Westminster, who was convicted of second-degree murder. The state’s account was stark: Cunningham had been fired from a workplace he once shared with Roberts-Gariety’s husband, he grew angry and threatening afterward, and on June 29, 2024, he went to the couple’s southeast Denver apartment to confront the husband. Roberts-Gariety, 23, answered first. She was shot and killed. The sentence imposed on Feb. 27, 2026, closed the trial court phase of a case shaped by escalation at each step.
The earliest public clues about motive came from the husband’s account to police, later reported from an arrest affidavit. He said Cunningham knew where the couple lived and had “issues” with him. He also said Cunningham made repeated threatening calls after being fired. The same reporting said the husband told police Cunningham used drugs while on the job, though it was not clear from the public record whether that was the reason for the firing. That gap is important because it marks one of the few places where the record remains incomplete. What is clearer is the progression prosecutors described: anger did not stay in the workplace, and it did not end with dismissal. It traveled into private life, to a home address, and then to a front door.
From there the case moved with grim speed. The shooting happened near South Dexter Street and East Kentucky Avenue in southeast Denver. Residents in the building heard a gunshot and someone running away. Another resident recorded video of a man leaving in a car, and surveillance cameras also caught the vehicle pulling out shortly after the shooting. Police used that material to track Cunningham down and arrest him within hours. Investigators did not have to build the case from scattered fragments over a long period; instead, the public timeline shows a compressed sequence of threat, arrival, shooting, flight and arrest. That gave prosecutors a strong chronological spine at trial and likely helped reduce room for confusion about who had been at the scene.
Yet the legal case was never only about time stamps and camera views. It also involved the harder fact that the person killed was not the person Cunningham was said to be seeking out. The district attorney’s office said Cunningham intended to confront Roberts-Gariety’s husband but shot Roberts-Gariety when she came to the front door. That detail set the case apart from one driven by a direct personal dispute between defendant and victim. It also sharpened the harm described by her family. Roberts-Gariety’s obituary and relatives’ public comments presented her as a young woman building a life in Denver with her husband, close to family in Ohio and known for warmth and care toward animals and other people. Those details did not affect the formal elements of the murder charge, but they shaped how the community understood what had been taken.
The prosecution phase stretched well beyond the shooting. Cunningham, who public reporting said was on parole for a prior burglary conviction at the time of the killing, remained in the criminal process as the case moved toward trial. On Dec. 22, 2025, a Denver jury convicted him of second-degree murder. He faced up to 48 years in prison. At sentencing on Feb. 27, 2026, the judge imposed 42 years. The district attorney’s office announced the sentence publicly on March 3 and credited Senior Deputy District Attorney Matt James, Associate Deputy District Attorney Makayla Samour and Detective Gavin Whitman for their work on the case. District Attorney John Walsh said Roberts-Gariety would still be alive if not for Cunningham’s actions and said the sentence ensured he would pay a heavy price.
Family reaction showed how differently a court and a household mark an ending. One of Roberts-Gariety’s sisters said that anything above 20 years was basically a life sentence for Cunningham. In the same breath, she described her family as serving a life sentence of grief. That contrast turned the sentencing hearing into more than a recitation of prison years. It became a final public accounting of how a conflict that began with resentment at work wound up defining the lives of people far outside that dispute. The husband lost his wife. Her parents and sisters lost a daughter and sibling. The court imposed a punishment, but not a restoration.
What comes next is narrower and more technical than what came before. The conviction is in place, the sentence has been imposed and no further trial-court milestone has been publicly announced beyond the normal possibility of an appeal. The larger narrative, though, is already set: a workplace grievance became a home confrontation, a home confrontation became a killing and that killing has now led to decades in prison.
Author note: Last updated March 31, 2026.