
“We are an experienced team of trial lawyers, with a distinguished record of providing superior legal advocacy, and a reputation for working tirelessly towards accomplishing the individualized goals of every single client. We understand that "success" means something different to every client.”
-Attorney Frank O'Brien
Francis T. O’Brien, Jr. serves as director of the firm’s criminal practice group. Formerly a founding partner of the Boston Criminal Trial firm, Wheeler & O’Brien, P.C., Attorney O’Brien brings over thirty years of experience in the field, and is one of the most well respected Boston criminal lawyers currently practicing today. Whether your case goes to trial or is resolved prior to that point, Attorney O’Brien has the judgment, knowledge and skill to achieve the most favorable outcome for your case.
The reality is that many arrests and criminal charges do not occur during normal business hours. A person facing criminal charges needs an aggressive attorney who is available and responsive whenever the need arises, wherever you are in the city of Boston, or in any town or city in Massachusetts. Whether your situation requires an immediate appearance at a criminal court, a Boston Police Station or Police Station anywhere in Massachusetts, State Police Barracks, jail or other location, call Francis T. O’Brien, Jr. first.
Mr. O’Brien also has extensive state appellate experience, having argued criminal cases before the Supreme Judicial Court and Appeals Court of Massachusetts as well as the Supreme Court of New Hampshire. On the federal level he is admitted to practice before the First, Second, Fourth and Seventh Circuit Courts of Appeal..
Criminal Cases We Handle
Our practice group concentrates on all areas of criminal defense. We have achieved outstanding results for out clients in cases involving drug crimes, vehicular homicide, driving to endanger, fraud, white collar crimes and crimes of violence including, murder, rape, date rape, domestic assault & battery and restraining order violations. In addition, Attorney O’Brien has extensive experience in criminal issues relating to search and seizure as well as issues arising in the defense of drunk driving and operating under the influence and is an expert on Melanie’s Law and the criminal penalties associated with the law. He also has years of experience handling clerk’s hearing as well as criminal appeals.
Having successfully handled hundreds of cases of individuals charged with operating under the influence (OUI) and other motor vehicle offenses, Mr. O’Brien also has considerable experience with OUI-related issues involving license suspensions and requests for license reinstatement. He frequently represents clients before the Registry of Motor Vehicles and Board of Appeal for the Registry.
Knowledge of The Law
Boston laws regarding criminal activity are complex and require an experienced lawyer with a thorough understanding of the letter of the law. Very often there are situations where mere technicalities can decide a case. It is these instances where the expertise and judgment of Francis T. O’Brien, Jr. can be of vital importance to your case.
Criminal Defense Fee Structure

There is no charge for an initial consultation or initial office visit. We charge a flat fee that varies based on the type of criminal case as well as depending on the complexity and nature of the case.
Speak with a Criminal Defense Lawyer
To speak with a highly experienced Boston criminal lawyer, contact us online or telephone Francis T. O’Brien, Jr. at O'Brien Law Boston twenty four hours, seven days a week, toll free at 617-512-0939. As a member of the Massachusetts and Florida state bars and the federal bar in Massachusetts, Mr. O’Brien has also represented clients on criminal, state and federal matters in more than twenty states.