Christina Copley, 41, is accused of killing her 82-year-old husband while maintaining that she acted in self-defense.

MESA, Ariz. — A late-night visit to a neighbor’s home became the first link in a homicide investigation after police said Christina Copley arrived carrying a blood-covered kitchen knife and told people there that her husband was dead. Officers soon found 82-year-old Ed Copley inside the couple’s Mesa home on July 18 with multiple apparent stab wounds.

Copley, 41, was arrested on suspicion of second-degree murder after investigators questioned her account that her husband attacked her first, according to police statements and arrest records described by several Arizona news organizations. The case centers not only on what happened inside the home that night but also on what Copley said immediately afterward, the injuries officers said they observed, and a documented history of domestic-violence-related calls involving the couple. Her self-defense claim remains an allegation that has not been resolved in court.

The sequence began shortly before 10:30 p.m. in northeast Mesa, near the Loop 202 Red Mountain Freeway and McDowell Road. Police said Copley went to a nearby residence after the stabbing. Arrest documents described her as carrying a 13-inch kitchen knife with blood on it. Witnesses told investigators that she said she had stabbed her husband and that he was dead. The neighbor contacted authorities, turning a private encounter at a front door into the call that brought police to the neighborhood. Officers detained Copley without incident, according to the Mesa Police Department.

Police then went to the Copley residence and found Ed Copley on the floor near his bed. Authorities reported multiple apparent stab wounds and said emergency aid was attempted before he was pronounced dead at the scene. Published accounts based on the arrest paperwork describe significant injuries, but the precise number of wounds has not been publicly established in the materials reviewed for this report. Police treated the home as a homicide scene and began comparing what they found there with what Christina Copley had told the neighbor and what she would later tell investigators.

During her police interview, Copley gave an account that investigators said changed in significant ways. Court paperwork cited by local media says she initially denied killing her husband before telling officers that he had come at her with a knife. She said she was injured while trying to take the knife away and maintained that her subsequent actions were taken to protect herself. The allegation that Ed Copley initiated the confrontation has not been independently established. Because he died at the scene, the available public account of that part of the encounter comes largely from Christina Copley’s statements and investigators’ interpretation of physical evidence.

Officers scrutinized the injuries Copley pointed out as support for her version of events. She showed them damage to her clothing and an abrasion on her chest, according to the arrest documents. Police said there was no corresponding cut beneath a tear in her pants and said the mark on her chest appeared more consistent with a scratch than a knife wound. Those observations formed part of the reason investigators questioned her account, but they do not by themselves establish the complete sequence inside the home. The ultimate meaning of physical evidence would be an issue for investigators, prosecutors and, if the case proceeds to trial, the court.

Copley also told investigators that her husband had mistreated her. She alleged that he had kicked her earlier that day and had repeatedly abused her. According to the arrest affidavit as reported by Law&Crime, she told police that after obtaining the knife she became “ballistic” and swung it while trying to get away as her husband held her shoulders. The wording is significant because investigators cited it while reconstructing the confrontation, but it does not amount to a judicial finding about whether she acted intentionally, recklessly or lawfully in self-defense. Those are questions the criminal case would have to resolve.

The neighbor’s account added another layer to the investigation. Police said Copley had visited that residence periodically during the previous four months and made serious accusations about her husband, including allegations of physical and sexual abuse. Investigators characterized some of those statements as changing, inconsistent or difficult to follow. The accusations themselves have not been independently substantiated in the reporting reviewed here, and Ed Copley cannot respond to them. Their importance to the criminal case may depend on what evidence, if any, investigators can find beyond Copley’s previous statements to people in the neighborhood.

Authorities also said the July 18 episode was not the first time police had been called about domestic conflict involving the couple. Mesa police confirmed previous domestic-violence-related calls for service and said at least one earlier incident resulted in Christina Copley’s arrest. Some news reports citing court paperwork also describe prior convictions for assault, disorderly conduct and criminal damage. Those earlier matters do not prove that she committed the offense now alleged. They are separate from the question of what happened on July 18 and would be subject to the normal rules governing whether prior conduct can be used in a criminal proceeding.

The competing accounts leave several central facts unresolved in the publicly available record. Police have said Ed Copley suffered multiple stab wounds, that Christina Copley was found nearby after going to a neighbor’s home with the knife, and that witnesses reported hearing her acknowledge stabbing him. Copley, however, maintained in her police interview that her husband had attacked her first. The evidence needed to test that assertion could include forensic findings, the layout of the scene, any available communications or recordings, witness testimony and additional investigative records. The sources reviewed for this article do not establish whether all such evidence exists or what it shows.

Copley was booked into the Maricopa County jail on suspicion of second-degree murder, and initial reports said her bond was set at $500,000 cash only. A second-degree murder allegation is a charge, not a determination of guilt. Prosecutors would bear the burden of proving any criminal charge that proceeds to trial, while a self-defense claim would be evaluated under Arizona law and the evidence admitted in court. The initial arrest materials reflect investigators’ probable-cause theory at an early stage of the case rather than a final account tested through testimony and cross-examination.

The neighbor’s decision to call police remains one of the clearest points in the timeline. It brought officers to the area within minutes of the reported stabbing and gave investigators witnesses who could describe Copley’s appearance, the knife and the statements she allegedly made immediately after leaving her home. What happened in the minutes before she crossed that doorstep is less settled. Investigators described inconsistencies they believed weakened her self-defense explanation, while Copley alleged a history of abuse and an immediate attack by her husband. No publicly available court finding reviewed for this report has resolved those competing claims.

Reports reviewed through Aug. 26 document Copley’s arrest and second-degree murder allegation but do not establish a later conviction, acquittal, plea or dismissal. The death remains the subject of a criminal case in which the prosecution’s allegations and Copley’s self-defense account must be distinguished from facts ultimately proved in court.

Author note: Last updated Aug. 26, 2026.