A New South Wales Supreme Court judge has ruled that a 31-year-old man was not criminally responsible for the death of his mother at a Gunnedah caravan park nearly two years ago, citing severe and untreated mental illness.

Callan Davidson admitted to killing his mother, Cheryl Ann Davidson, at the Gunnedah Tourist Park on October 25, 2022. However, Justice Stephen Campbell delivered a special verdict of "act proven but not criminally responsible," concluding that Mr. Davidson was suffering from severe schizophrenia which rendered him unable to understand that his actions were morally wrong.

A Mother’s Desperate Search for Help

The court heard detailed accounts of the weeks leading up to the tragedy, during which Ms. Davidson desperately tried to support her son. Mr. Davidson had been sleeping rough before moving into a tent at the caravan park, where his mother regularly visited him, washed his clothes, and helped set up his campsite.

As his mental health deteriorated, Mr. Davidson became increasingly paranoid, with neighbors reporting hearing him crying and screaming in his tent at night. Diary entries written by Ms. Davidson revealed the immense emotional toll of trying to navigate her son's worsening state.

"Been full on with Cal all week," she wrote in one of her final entries. "Finally convinced him to see a doctor and get a referral for mental health Thursday, but that only lasted an hour. He rang me up five times last night crying."

The Devastating Timeline

On the night of October 24, Mr. Davidson took a taxi around Gunnedah before presenting himself at the Gunnedah Hospital emergency department around 11:00 PM. He informed a nurse that he had an appointment with a psychiatrist at 2:00 PM the following afternoon. Despite reporting no physical symptoms, he requested a full-body scan and chest X-ray. He left the facility at approximately 12:45 AM.

"The tragic irony of this timing will not be lost on anyone," Justice Campbell remarked during the proceedings, noting that the long-sought psychiatric intervention was only hours away.

The following morning, just after 8:00 AM, Ms. Davidson arrived at the caravan park to help her son move his tent. Shortly before her arrival, Mr. Davidson had purchased a set of steak knives from a local supermarket. Minutes after she arrived, witnesses heard her screaming for help. A post-mortem examination later revealed she had suffered 106 sharp-force injuries.

Under the Radar of Mental Health Services

Two independent forensic psychiatrists assessed Mr. Davidson, concluding he was experiencing active psychosis and command hallucinations during the attack. In interviews read to the court, Mr. Davidson explained that he believed he was receiving communications from the Freemasons ordering him to kill his mother.

"That morning I was pretty delirious, on another level of reality, not quite there, in a terrible mindset," Mr. Davidson told psychiatrists. "I thought it was something they required me to do. I didn't want to do it, but I was neurotic and exhausted."

Justice Campbell found that these fixed delusions were classic symptoms of severe, untreated schizophrenia. He noted that Mr. Davidson's transient, itinerant lifestyle had unfortunately allowed his escalating illness to remain "under the radar" of health professionals for years.

While acknowledging that the legal verdict might offer only "cold comfort" to the grieving family, Justice Campbell expressed hope that it provided some explanation for "why the inexplicable occurred." He praised Ms. Davidson’s profound maternal devotion, stating her actions were entirely motivated by her deep love for her son.