Murder & Manslaughter Defence

The Most Serious Charges in Canadian Law

Murder and manslaughter are the most serious criminal offences a person can face in Canada. A conviction for murder means a mandatory sentence of life imprisonment — there is no discretion, no alternative. The only question is how long before you become eligible for parole. For manslaughter, while there is no mandatory life sentence in most cases, the maximum penalty is still life imprisonment and sentences of many years are common.

If you or someone you love has been charged with murder or manslaughter, the stakes could not be higher. These cases demand an immediate, aggressive, and meticulous defence from lawyers who understand the law, the science, and the courtroom dynamics that define homicide prosecutions.

At Mor Fisher LLP, we defend individuals charged with all categories of homicide across Ontario — from our offices in Barrie and Toronto, and in courthouses throughout the province.

How Canadian Law Classifies Homicide

The Criminal Code divides culpable homicide into three categories: first-degree murder, second-degree murder, and manslaughter. The classification depends on the accused’s mental state and the circumstances of the offence — not simply on the fact that someone died.

First-Degree Murder (Section 235)

First-degree murder is the most serious offence in the Criminal Code. A homicide is classified as first-degree murder when it is planned and deliberate — meaning the accused formed the intention to kill and thought about it beforehand, even briefly.

The law also classifies certain killings as first-degree murder regardless of whether they were planned and deliberate:

• Murder of a police officer, corrections officer, or other peace officer acting in the course of their duties
• Murder committed during the commission of certain offences, including sexual assault, kidnapping, forcible confinement, hijacking, and hostage taking — sometimes called “constructive first-degree murder”
• Murder committed in connection with a criminal organization
• Murder involving intimidation, terrorism, or harassment as defined in specific provisions of the Criminal Code

The penalty for first-degree murder is life imprisonment with no eligibility for parole for 25 years. This is mandatory — the sentencing judge has no discretion to impose a shorter parole ineligibility period.

Second-Degree Murder (Section 235)

Second-degree murder is any murder that is not first-degree murder. In practical terms, this means the Crown has proven that the accused either:

1. Intended to cause the death of the victim, or
2. Intended to cause bodily harm that the accused knew was likely to cause death and was reckless whether death ensued

— but the killing was not planned and deliberate, and none of the automatic first-degree categories apply.

Second-degree murder is common in cases involving sudden confrontations, escalating violence, and impulsive acts where the intent to kill — or the intent to cause harm likely to cause death — is present but there was no advance planning.

The penalty for second-degree murder is life imprisonment with no eligibility for parole for a minimum of 10 years. The sentencing judge has discretion to set the parole ineligibility period anywhere between 10 and 25 years. Factors that push the period higher include the brutality of the offence, the accused’s criminal record, and whether the offence involved a firearm.

Manslaughter (Section 236)

Manslaughter is a culpable homicide that does not amount to murder. This means the accused caused the death of another person through an unlawful act or criminal negligence, but did not have the specific intent required for murder.

Common manslaughter scenarios include:

• An assault that unexpectedly results in death — a single punch that causes a fatal head injury, for example
• A death caused by criminal negligence, such as reckless handling of a firearm
• A killing that would otherwise be murder but is reduced to manslaughter by provocation (discussed below)
• A death caused during an unlawful act where the accused did not foresee or intend the fatal outcome

The maximum penalty for manslaughter is life imprisonment. There is no mandatory minimum sentence for manslaughter in most cases. However, where a firearm is used in the commission of manslaughter, there is a mandatory minimum of 4 years imprisonment. Manslaughter sentences in Ontario vary enormously — from suspended sentences or short jail terms for less culpable cases to double-digit penitentiary sentences for cases approaching the moral blameworthiness of murder.

Infanticide (Section 233)

Infanticide is a separate homicide offence that applies where a mother causes the death of her newly born child while her mind is disturbed as a result of giving birth or lactation. It is an indictable offence carrying a maximum of 5 years imprisonment. This is a narrow and rarely charged offence, but it is relevant in cases where the Crown might otherwise pursue a murder charge against a mother in the period following birth.

The Crown’s Burden in a Murder Case

Murder is an offence of specific intent. The Crown must prove beyond a reasonable doubt not only that the accused caused the victim’s death, but that the accused had the requisite mental state — the mens rea — for the specific category of homicide charged.

For first-degree murder, the Crown must prove:

1. The accused caused the victim’s death
2. The accused intended to cause death, or intended to cause bodily harm that they knew was likely to cause death and was reckless whether death ensued
3. The killing was planned and deliberate (or falls within one of the automatic first-degree categories)

For second-degree murder, the Crown must prove elements 1 and 2 but does not need to prove planning and deliberation.

For manslaughter, the Crown must prove that the accused caused the victim’s death through an unlawful act or criminal negligence, but does not need to prove intent to kill.

Each element must be proven beyond a reasonable doubt. The failure to prove any single element means the charge is not made out — and in many murder cases, the battle is over the accused’s mental state, not over what physically happened.

Defence Strategies in Homicide Cases

Homicide cases are among the most complex matters in criminal law. The defence strategy depends entirely on the facts — the evidence, the forensics, the witnesses, the circumstances. Below are the most common categories of defence in murder and manslaughter cases.

Identity: “It Wasn’t Me”

In some cases, the central issue is whether the accused was the person who committed the act. Identity defences may involve challenging:

• Eyewitness identification — eyewitness testimony is notoriously unreliable, and the courts have recognized this through decades of case law
• DNA and forensic evidence — the collection, handling, and interpretation of forensic evidence can be challenged
• Cell phone and digital evidence — location data, communications, and surveillance footage
• Alibi evidence — demonstrating the accused was elsewhere when the offence occurred

Self-Defence (Section 34)

The Criminal Code provides a complete defence where the accused used force, including lethal force, that was reasonable in the circumstances in response to a threat of force. The law considers:

• The nature of the threat
• Whether the accused’s response was proportionate
• The accused’s role in the incident
• The size, age, and physical capabilities of the parties
• Whether there was a history of violence between the parties
• Whether a weapon was involved

A successful self-defence claim results in a complete acquittal. Our article on self-defence under Section 34 explains the legal framework in detail.

Provocation (Section 232)

Provocation is a partial defence that reduces murder to manslaughter. It applies where the accused was provoked by a sudden act or insult — of such a nature as to deprive an ordinary person of self-control — and acted on that provocation in the heat of the moment before having time to regain composure.

Provocation does not result in an acquittal. It reduces the conviction from murder to manslaughter, which eliminates the mandatory life sentence and gives the sentencing judge discretion over the penalty.

Lack of Intent

Because murder is a specific intent offence, the defence may argue that the accused did not have the mental state required for murder — even if they caused the victim’s death. This can lead to an acquittal on the murder charge and a conviction for the lesser offence of manslaughter instead.

Factors that may negate intent include:

• Intoxication — extreme intoxication may, in limited circumstances, prevent the Crown from proving the specific intent required for murder. The law in this area is evolving following the Supreme Court of Canada’s decisions on intoxication and Charter rights. See our article on Charter rights in criminal defence for background.
• Mental disorder — where the accused suffers from a mental disorder that rendered them incapable of appreciating the nature and quality of their act or of knowing it was wrong, the defence of not criminally responsible on account of mental disorder (NCRMD) may apply under Section 16.
• Accident — where the death was genuinely accidental and the accused did not have the intent required for murder or the fault element required for manslaughter.

Challenging the Evidence

In every homicide case, the defence scrutinises the Crown’s evidence for weaknesses:

• Forensic evidence — autopsy findings, blood spatter analysis, toxicology, ballistics, and DNA evidence can all be challenged through cross-examination and independent expert testimony
• Witness credibility — the reliability and truthfulness of Crown witnesses is always in issue
• Charter violations — if the police violated the accused’s rights during the investigation — through an unlawful search, a coerced statement, or a breach of the right to counsel — the evidence obtained may be excluded under Section 24(2) of the Charter
• Disclosure deficiencies — the Crown is constitutionally required to disclose all relevant evidence to the defence. Failure to do so can undermine the prosecution’s case or lead to a stay of proceedings

Bail in Murder Cases

For murder charges, bail operates differently than for other offences. Murder is listed under Section 469 of the Criminal Code, which means:

• Bail can only be granted by a Superior Court judge, not a justice of the peace
• The accused bears the reverse onus — they must show cause why their detention is not justified
• Bail conditions in murder cases are extremely strict and typically involve substantial sureties, house arrest, and electronic monitoring

Obtaining bail on a murder charge is difficult but not impossible. It requires thorough preparation, strong sureties, and a detailed release plan. Early involvement of experienced defence counsel is critical.

The Preliminary Inquiry

Because murder carries a maximum penalty of life imprisonment, the accused is entitled to a preliminary inquiry — a hearing before a judge of the Ontario Court of Justice to determine whether there is sufficient evidence to commit the accused to stand trial.

The preliminary inquiry is an important tool. It allows the defence to:

• Test the Crown’s evidence through cross-examination before trial
• Assess the strength of the Crown’s case
• Obtain evidence that may not have been included in disclosure
• Seek a discharge of the charge if the evidence is insufficient

If the preliminary inquiry judge finds insufficient evidence, the charge is discharged and the accused is not committed to trial.

Mode of Trial: The Accused’s Election

Murder falls under Section 469 of the Criminal Code, which means the default mode of trial is a jury trial in the Superior Court of Justice. The accused can apply to be tried by a judge alone, but this requires the consent of the Attorney General. In practice, many murder cases proceed before a jury.

Choosing between a judge-alone trial and a jury trial is one of the most consequential strategic decisions in a murder case. Our article on understanding elections in criminal cases explains the considerations in detail.

Included Offences and Verdict Options

In a murder trial, the jury or judge is not limited to a binary guilty-or-not-guilty verdict on the charge as laid. The Criminal Code provides for included offences — lesser charges that are necessarily included within the greater charge. For murder, the included offences are:

• Manslaughter — available on any murder charge
• Infanticide — available where the evidence supports it
• Attempt murder — in some circumstances

This means that even where the jury is not satisfied that the Crown has proven murder, they may convict on the lesser included offence of manslaughter.

Why Early Legal Representation Matters

Homicide investigations move quickly. The police will interview witnesses, collect forensic evidence, seek search warrants, and attempt to question the accused — all within hours or days of the event. Every decision made in the early stages of the investigation can affect the outcome of the case months or years later.

If you are a suspect in a homicide investigation, or if you have been charged with murder or manslaughter, you should exercise your right to silence and contact a criminal defence lawyer immediately. Do not provide a statement to the police without first obtaining legal advice.

Talk to Mor Fisher LLP

A murder or manslaughter charge is the most serious situation you will ever face. The outcome will define the rest of your life. You need defence lawyers who will fight for you with everything they have — lawyers who understand the law, the forensic science, and the courtroom dynamics that determine the outcome of homicide cases.

At Mor Fisher LLP, we defend clients facing the full range of homicide charges — first-degree murder, second-degree murder, manslaughter, and attempt murder — in Barrie, Toronto, Orillia, Newmarket, and courthouses across Ontario.

Contact us today for a confidential consultation. If you or a family member has been arrested, call us immediately at 705-721-6642 or toll-free at 833-527-5369.