Murder Lawyer Toronto | Homicide & Manslaughter Defence Lawyers

Experienced Defence for Murder, Homicide, and Manslaughter Charges in Toronto

Few criminal allegations carry consequences as severe as a homicide charge. Whether you are facing allegations of first-degree murder, second-degree murder, manslaughter, attempted murder, or criminal negligence causing death, your future, freedom, and reputation may be at risk.

At Costa Law Firm, our criminal defence team represents individuals charged with the most serious offences under the Criminal Code of Canada. Led by Toronto criminal lawyer David Costa, our firm provides strategic, results-focused legal representation for clients facing homicide-related charges throughout Toronto, Brampton, Mississauga, Newmarket, Vaughan, Markham, Hamilton, Barrie, and the Greater Toronto Area.

A homicide investigation often begins long before formal charges are laid. Early legal intervention can be critical. If you have been arrested, are under investigation, or believe you may be questioned by police regarding a death-related matter, it is important to seek legal advice immediately.

Call Costa Law Firm at (416) 535-6329 for a confidential consultation.

Why Choose Costa Law Firm for a Homicide Defence Case?

When facing a murder or manslaughter allegation, experience matters.

Costa Law Firm has built a reputation as one of Toronto’s trusted criminal defence law firms, providing legal representation in complex and high-stakes criminal matters. Our firm has served clients throughout Ontario for more than three decades and has been recognized multiple times for legal excellence and client service.

When you work with our team, you benefit from:

• Over 30 years of criminal defence experience
• Representation by David Costa and an experienced litigation team
• Thorough case preparation and strategic defence planning
• Detailed review of forensic, medical, and expert evidence
• Charter rights analysis and constitutional challenges
• Skilled courtroom advocacy
• 24/7 availability for urgent criminal matters
• Representation throughout Toronto and the GTA

Every homicide case presents unique legal and factual challenges. Our objective is to identify weaknesses in the prosecution’s case and build the strongest defence available under the law.

Understanding Homicide Charges in Canada

Homicide refers to the act of causing the death of another person, either directly or indirectly.

Canadian criminal law recognizes different categories of homicide, each carrying different legal consequences.

The primary homicide offences include:

• First-Degree Murder
• Second-Degree Murder
• Manslaughter
• Criminal Negligence Causing Death
• Infanticide

The specific charge depends on factors such as intent, planning, circumstances, and the evidence available to prosecutors.

What Is First-Degree Murder?

First-degree murder is the most serious homicide offence under Canadian law.

To secure a conviction, the prosecution must generally prove that the killing was both:

Planned

The act was considered or organized before it occurred.

Deliberate

The accused intentionally carried out the act after making a conscious decision to do so.

Certain killings may also be classified as first-degree murder regardless of planning if they occur during specific criminal offences identified in the Criminal Code.

Because a conviction carries a mandatory life sentence, these cases require a sophisticated and aggressive defence strategy.

What Is Second-Degree Murder?

Second-degree murder applies when a person intentionally causes the death of another individual but the circumstances do not meet the legal requirements for first-degree murder.

Unlike first-degree murder, there is generally no requirement that the act be planned or deliberate.

Second-degree murder remains an extremely serious offence and also carries a mandatory life sentence upon conviction.

The legal issues in these cases often involve questions surrounding intent, evidence, witness reliability, forensic findings, and self-defence claims.

What Is Manslaughter?

Manslaughter is a homicide offence that does not involve the legal intent required for murder.

A person may face manslaughter allegations when a death occurs as a result of:

• An unlawful act
• Excessive use of force
• Criminal negligence
• Other conduct that results in death without a proven intent to kill

Although manslaughter is generally viewed as less serious than murder, it can still result in lengthy periods of imprisonment.

Every manslaughter case requires a careful examination of the surrounding facts and circumstances.

Unlawful Act Manslaughter

One common form of manslaughter involves an unlawful act that unintentionally causes another person’s death.

Examples may include:

• Physical altercations
• Assault-related incidents
• Dangerous conduct resulting in fatal injuries

The prosecution must establish that the underlying unlawful act contributed to the death and created a foreseeable risk of bodily harm.

Criminal Negligence Causing Death

Criminal negligence causing death occurs when an individual’s actions or omissions represent a marked and substantial departure from the conduct expected of a reasonable person.

Examples may involve:

• Failure to provide necessary care
• Dangerous handling of firearms
• Serious safety violations
• Conduct creating a foreseeable risk of death

These cases often involve extensive expert evidence and complex legal arguments.

Common Defences to Murder and Manslaughter Charges

Every homicide case requires a defence strategy tailored to the facts.

Potential defences may include:

Self-Defence

Canadian law recognizes the right to use reasonable force to protect yourself or another person from harm.

Where self-defence applies, criminal liability may be reduced or eliminated entirely.

Lack of Intent

The prosecution must prove specific mental elements in murder cases.

Where intent cannot be established, murder charges may not be sustainable.

Charter Violations

Police investigations must comply with the Canadian Charter of Rights and Freedoms.

Examples include:

• Unlawful searches
• Improper detention
• Violations of the right to counsel
• Improperly obtained statements

Charter breaches can sometimes result in evidence being excluded.

Mistaken Identity

Eyewitness errors, unreliable identifications, and investigative mistakes can lead to wrongful accusations.

Mental Disorder Defence

In some circumstances, a person may be found Not Criminally Responsible (NCR) if a mental disorder prevented them from appreciating the nature of their actions or understanding that their conduct was wrong.

Penalties for Murder and Manslaughter in Canada

The penalties associated with homicide offences are among the harshest in Canadian law.

First-Degree Murder

• Mandatory life imprisonment
• No parole eligibility for at least 25 years

Second-Degree Murder

• Mandatory life imprisonment
• Parole eligibility determined by the court within statutory limits

Manslaughter

• Maximum sentence of life imprisonment
• Sentences vary depending on circumstances and aggravating factors

Because the consequences are severe, securing experienced legal representation at the earliest possible stage is essential.

Homicide Investigations: Why Early Legal Representation Matters

Many people mistakenly believe they should wait until charges are laid before contacting a lawyer.

In reality, legal representation can be valuable during the investigation stage.

Early involvement allows your lawyer to:

• Protect your constitutional rights
• Advise you before police questioning
• Review investigative procedures
• Preserve evidence
• Develop an effective defence strategy

Statements made during the early stages of an investigation can significantly affect the outcome of a case.

Frequently Asked Questions

What should I do if police want to question me about a homicide investigation?

Exercise your right to remain silent and contact a criminal defence lawyer immediately before answering questions.

Can murder charges be reduced?

Depending on the evidence and circumstances, homicide charges may sometimes be challenged, reduced, or resolved differently.

Is manslaughter less serious than murder?

Yes, but manslaughter remains a serious indictable offence that can result in significant prison sentences.

Do all homicide cases go to trial?

Not necessarily. Some cases are resolved through negotiations, pre-trial motions, or other legal procedures.

When should I hire a murder lawyer?

You should seek legal advice as soon as possible after an arrest, investigation, or police contact.

Speak With a Toronto Murder Lawyer Today

A homicide allegation can change your life instantly. The legal decisions made in the early stages of a case may significantly influence the outcome.

Costa Law Firm provides experienced criminal defence representation for individuals facing allegations of murder, manslaughter, attempted murder, and other homicide offences throughout Toronto and the Greater Toronto Area.

If you or a loved one requires immediate legal assistance, contact Costa Law Firm today.

Call (416) 535-6329 for a confidential consultation with our criminal defence team.