Aggressive Criminal Defense for Homicide in Greater Boston Massachusetts

Charged with Homicide in Massachusetts? Our Boston Defense Attorneys Are Ready to Protect Your Rights

At the Law Office of Matthew W. Peterson, we understand how serious and life-changing a Homicide charge can be. With offices located in both Boston and Salem, our criminal defense law firm is dedicated to defending individuals throughout Suffolk, Essex, Middlesex, and Norfolk Counties who are facing Homicide allegations. Whether you’re in Boston, Brighton, Chelsea, Salem, Lynn, Peabody, Somerville, or beyond, our experienced team—including aggressive criminal defense attorneys and a former prosecutor—takes your case personally and is prepared to defend your rights at every stage.

Homicide is among the most serious offenses in Massachusetts, and the potential penalties reflect its gravity. Our role as a Boston criminal defense attorney is not to pass judgment, but to ensure that your constitutional rights are protected and that the Commonwealth meets its burden of proof. Every case is different. That’s why we approach each one with strategic planning, thorough investigation, and aggressive courtroom representation. At the Law Office of Matthew W. Peterson, you’re not just another case—we treat your defense as if it were our own.

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Understanding Homicide Charges in Massachusetts

Homicide, by definition under Massachusetts General Laws Chapter 265, encompasses a range of offenses involving the unlawful killing of another person. The exact charge can vary depending on the circumstances and the alleged intent of the accused. Here are the main types of homicide charges in Massachusetts:

  • Murder in the First Degree involves premeditated killing, extreme atrocity or cruelty, or a killing committed during the commission of a felony.

  • Murder in the Second Degree is a killing that lacks premeditation but still involves malice.

  • Manslaughter can be voluntary (such as in the heat of passion) or involuntary (resulting from reckless or negligent conduct).

Each of these offenses carries severe consequences, including life imprisonment without parole for first-degree murder. For more detailed legal definitions, you can visit the Massachusetts Legislature’s official site.

Given the high stakes, having a knowledgeable and aggressive criminal defense attorney is essential.

What to Expect After a Homicide Charge

If you or a loved one has been arrested for Homicide, the process can feel overwhelming. After an arrest, there may be an arraignment, bail hearings, probable cause hearings, and ultimately a trial. Each step carries its own challenges—and potential opportunities for defense.

Our Boston criminal defense attorneys will work closely with you to build a strategic defense that may involve challenging witness credibility, identifying procedural violations, presenting alternative theories, or negotiating for reduced charges if appropriate. With a former prosecutor on our team, we bring valuable insight into how the Commonwealth prepares its cases—and how to effectively counter them.

We also understand how critical the early stages of your case are. That’s why we encourage you to contact us now to schedule a legal strategy session. The sooner we’re involved, the more opportunities we have to protect your future.

Areas We Serve

Our criminal defense law firm provides representation for individuals charged with Homicide throughout Eastern Massachusetts. With offices in both Boston and Salem, we are positioned to serve clients across several counties, including but not limited to the following areas:

Whether your case is in an urban court like Boston or in a smaller community such as Swampscott or Saugus, our attorneys are familiar with the local procedures and ready to stand by your side. No matter where you’re located within these areas, we are committed to protecting your rights and delivering a strong, effective defense.

Why Choose Our Massachusetts Defense Attorneys for a Homicide Case?

Homicide cases are complex, emotionally charged, and carry long-term consequences. When you’re facing such serious allegations, the quality of your legal defense can make all the difference. At our criminal defense law firm, we are known for:

  • Aggressive courtroom representation
  • In-depth knowledge of Massachusetts criminal statutes
  • Experience with violent crime and assault cases
  • A former prosecutor’s perspective
  • Personalized attention to every case


Unlike firms that treat cases as files to move along, we treat your situation with the care and urgency it deserves. We don’t rely on gimmicks or false promises. We provide clear, realistic guidance and fight hard for the best possible outcome.

Let Us Build Your Defense

Being charged with Homicide is overwhelming—but you don’t have to face it alone. At the Law Office of Matthew W. Peterson, we bring aggressive and strategic legal defense to individuals across Suffolk, Essex, Middlesex, and Norfolk Counties. With offices in Boston and Salem, we’re ready to support you during this critical time. Contact us today to schedule a confidential strategy session and take the first step toward protecting your future.

Frequently Asked Questions

What is the difference between murder and manslaughter in Massachusetts?

Murder involves malice and can be either premeditated or committed with extreme cruelty. Manslaughter generally refers to killings without malice, often due to recklessness or in the heat of passion.

Yes. In cases of involuntary manslaughter, an accidental killing caused by reckless or negligent behavior can still result in criminal charges.

A first-degree murder conviction carries life in prison without the possibility of parole. Second-degree murder and manslaughter also carry lengthy prison terms, depending on the circumstances.

You should exercise your right to remain silent and contact a criminal defense attorney immediately. Statements made to law enforcement can and will be used against you.

Reach out to a qualified Boston criminal defense attorney right away. Early legal intervention is critical for protecting your loved one’s rights and future.

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