On July 30, 2008, a Greyhound bus rolled eastward from Edmonton toward Winnipeg, cutting across the long summer stretch of Canadian highway. Inside, passengers settled into the rhythm of distance travel — headphones on, eyes closed, conversations fading into engine noise.
Among them was 22-year-old Tim McLean.
He had been working at a carnival in Alberta and was on his way home. Friends later described him as friendly, creative, and warm. That evening, he sat near the back of the bus, listening to music, eventually drifting to sleep.
Beside him sat a man he did not know: Vince Weiguang Li, 40 years old.
What happened next would become one of the most horrifying crimes in modern Canadian history.
Without warning, Li pulled out a knife and began stabbing Tim McLean repeatedly. The attack was sudden, brutal, and incomprehensible. Other passengers initially thought it was a fight — until they realized it was something far worse.
Panic erupted.
Passengers scrambled toward the front of the bus. Some ran off as soon as the vehicle stopped on the side of the highway near Portage la Prairie, Manitoba. The driver and several men attempted to intervene but were forced back by the violence. They managed to exit and lock the doors, trapping Li inside.
But the nightmare did not end there.
Through the bus windows, stunned witnesses saw Li continue to mutilate Tim’s body. He severed the victim’s head and reportedly held it up toward the glass. Later reports revealed acts of cannibalism that shocked even seasoned investigators. The horror unfolded in plain sight, illuminated by headlights and flashing police lights once authorities arrived.
For hours, Li remained inside the bus alone with the body.
When police surrounded the vehicle, he did not attempt to flee. He did not resist arrest. Officers reported that he repeatedly said, “I have to stay on this bus forever.”
The image of a Greyhound coach stopped on a dark Canadian highway, surrounded by police, became seared into national memory.
Tim McLean was dead at 22.
Canada — a country often perceived as insulated from extreme violence — was forced to confront a crime that felt almost unimaginable.
In the days that followed, investigators struggled to understand motive. There was no known connection between Li and McLean. They were strangers.
During questioning, Li told authorities he believed he was acting under divine command. He claimed he heard the “voice of God” telling him that Tim was an alien or a demon threatening humanity, and that he had to kill him to protect others.
Psychiatrists later diagnosed Li with severe untreated schizophrenia. Evidence presented in court indicated he had been experiencing psychosis for some time and was not receiving medical treatment. His delusions were deeply fixed, and at the time of the attack, experts testified that he was incapable of understanding the moral wrongness of his actions.
In 2009, a judge found Li not criminally responsible (NCR) due to mental disorder.
Under Canadian law, a verdict of not criminally responsible does not mean acquittal or freedom. It means the individual committed the act but lacked the capacity to understand its nature or wrongfulness due to severe mental illness. The person is then placed under the authority of a provincial review board rather than sentenced to prison.
Li was committed to a high-security psychiatric hospital in Selkirk, Manitoba.
For many Canadians — and especially for Tim McLean’s family — the NCR verdict was deeply painful. It felt, emotionally, like justice denied.
But legally, the system had followed its framework.
The Manitoba Criminal Code Review Board conducted regular assessments of Li’s condition. Over time, doctors reported that with antipsychotic medication — specifically risperidone — his symptoms stabilized. His delusions subsided. He expressed remorse. He no longer exhibited signs of active psychosis.
Gradually, his conditions were eased.
Initially confined under strict supervision, he was later granted escorted passes outside the hospital. Then unescorted outings. Then extended leaves. Each step was based on psychiatric evaluations concluding he posed minimal risk if compliant with medication.
In 2015 and 2016, those freedoms expanded.
Then, in February 2017, the Manitoba Criminal Code Review Board granted Vince Li an absolute discharge. The board concluded he was no longer a significant threat to public safety. Under Canadian law, an absolute discharge removes all legal restrictions — no supervision, no monitoring, no conditions.
By that time, Li had legally changed his name to Will Baker (or Will Lee Baker). He was living independently in Manitoba.
For Tim McLean’s mother, Carol de Delley, the decision was devastating.
To her — and to many members of the public — the man who had committed one of the most grotesque acts in Canadian history was now free. Her son, meanwhile, would never return home.
Carol de Delley became an outspoken critic of the NCR system. She argued that its safeguards were insufficient, that someone capable of such brutality should never be fully released. She attempted to advocate for legal reform, calling for changes that would ensure stricter oversight or lifetime supervision in cases involving extreme violence.
But the legal framework remained unchanged.
The Greyhound attack forced Canada into a profound moral and legal debate: How should a society balance public safety, mental illness, and justice?
On one side stands the principle that individuals who are severely psychotic and unable to understand reality are not morally culpable in the same way as someone acting with rational intent. Modern criminal law recognizes that punishment presumes moral agency.
On the other side stands the enduring anguish of victims’ families — and the instinctive fear of releasing someone who committed acts of such brutality.
The public reaction to Li’s gradual release was intense. Online forums filled with anger. Talk radio debated the limits of compassion. Politicians faced questions about whether the NCR system was too lenient.
Yet psychiatric experts cautioned against equating mental illness with violence. The vast majority of people living with schizophrenia are not violent. Untreated psychosis combined with specific stressors can, in rare cases, produce catastrophic outcomes. But stigma, they argued, should not dictate policy.
This case also highlighted failures in mental health systems.
Before the attack, Li had shown signs of deteriorating mental health. Friends and acquaintances later described unusual behavior. But untreated schizophrenia often progresses silently. Access to care, continuity of medication, and early intervention can mean the difference between stability and crisis.
Tim McLean’s death raised uncomfortable questions about gaps in mental health outreach and support.
It also changed Greyhound policy. In the wake of the attack, debates arose about bus security and passenger screening. McLean’s family pursued legal action against Greyhound, arguing that safety measures were insufficient. The litigation process stretched over years, with complex legal arguments about foreseeability and duty of care.
But beyond policy and lawsuits lies the human core of the story.
Tim McLean was a son, a friend, a young man with a future. He boarded a bus expecting to go home.
His mother has spoken publicly about the permanence of loss. She has described the surreal pain of hearing her son’s killer was gradually gaining freedoms — day passes, supervised outings, eventual discharge — while her own life remained frozen in grief.
For families of victims in NCR cases, the emotional timeline differs sharply from the legal one. The system measures progress through psychiatric stability and risk assessments. Families measure time through anniversaries and absence.
The phrase “I have to stay on this bus forever” echoes strangely in hindsight. It reflected the delusional state Li was in during arrest — a mind fractured from reality. But symbolically, it also captures how that bus became frozen in national consciousness.
The Greyhound 1170 is no longer just a route number. It is shorthand for a moment when Canada’s sense of safety was shaken.
In the years since, the debate has not fully quieted. Advocates for mental health reform argue that early treatment access could prevent similar tragedies. Critics of the NCR system argue for stricter post-release supervision in cases involving extreme violence.
Both positions stem from legitimate concerns: compassion and caution, rehabilitation and protection.
The challenge is reconciling them.
Canada’s legal system operates on the principle that once a person no longer poses a significant threat, they cannot be detained indefinitely. Absolute discharge reflects constitutional protections against preventive detention without cause.
Yet for those who loved Tim McLean, “no longer dangerous” feels abstract compared to the memory of what happened.
This case remains a chilling reminder of how untreated severe mental illness can intersect with tragedy — and how legal justice does not always align with emotional justice.
Tim McLean was 22 years old.
He fell asleep on a bus.
He never woke up.
His mother continues to speak his name.
And Canada continues to wrestle with the question his death left behind: When mental illness drives unimaginable violence, what does justice truly mean — and who gets to define it?