The Criminal Defense Attorney That Doctors, Lawyers, Politicians, Accountants, Business Executives, Federal Agents, Police Officers, Military Members, Professional Athletes, Entertainment Figures, Conservatives, Liberals, And First-Time Offenders Call When They Need A Criminal Defense Attorney.
So Should You.
The federal and state criminal defense attorney who was once a federal prosecutor and a state prosecutor. He once wrote the prosecution playbook. Now he uses it against them.
The State Criminal Defense Attorney That Has Had Criminal Defense Case Victories At The Florida Supreme Court, District Courts of Appeal, Circuit Criminal Courts and County Criminal Courts – All Before The Age 40.
Big Enough to Beat Goliath.
Small Enough to Care About David.
O’Brien Hatfield represents individuals and corporations in federal criminal cases nationwide and in state criminal cases and in criminal appeals statewide. They have a complete criminal defense team and the resources necessary to leave no stone unturned – and an unmatched desire to win.
- Equity Partner Mark J. O’Brien is the firm’s managing partner and handles select state criminal cases and federal criminal cases throughout the state and across the country. Formerly a Miami prosecutor in the 1990’s, Mark is now widely lauded by federal judges and federal prosecutors as one of the best defense attorneys in the country.
- Equity Partner Victoria E. Hatfield is the chair of the firm’s criminal division. Victoria has achieved multiple trial not guilty verdicts and won numerous motions to dismiss and motions to suppress. When you need the very best, Victoria will stand by your side. And she fights to win.
- Shawn P. Napier is the Managing Partner of the firm’s Orlando Office. Shawn is a former federal prosecutor and a former state prosecutor. Shawn uses his federal and state prosecutorial experience to defend his clients in federal criminal courts nationwide and criminal courts throughout the state.
- Partner Oliva M. Goodman is the co-chair of the firm’s state criminal division. Olivia is a former large firm defense practitioner who has won criminal jury trials, motions to dismiss, motions to suppress, and criminal appeals. She is a dogged practitioner who believes in and fights for the rights of her clients.
- Partner Sheryl C. Johansen is the co-chair of the firm’s state criminal division. Sheryl has nearly two decades of criminal defense experience, with over fifty jury trials to her credit. Sheryl has achieved numerous trial not guilty verdicts, motions to dismiss, and motions to suppress. Sheryl has the necessary experience to achieve success.
- Partner Justin P. Fahringer is the co-chair of the firm’s state criminal division. Justin has extensive criminal law experience with over fifty jury trials to his credit.
- Partner Todd J. Murgo is the chair of the firm’s appellate division. Todd is a former large firm defense practitioner whose intelligence and tenacity challenges state and federal appellate prosecutors with every case. Todd balances this competitive fire with a unique compassion to his clients and their families to offer a rare human touch.
In addition, O’Brien Hatfield has assembled a criminal defense team to aid their criminal defense lawyers. Like how the law firm lawyers shape their strategy and approach to figure out what the prosecutor is going to do before he or she does it, the law firm assembled former federal and state law enforcement professionals to figure out what law enforcement will do before they do it. Their team includes a former Drug Enforcement Agency (DEA) Federal Special Agent who specializes in drug trafficking and gun crimes, a former Internal Revenue Service Criminal Investigation Division (IRS CID) Federal Special Agent who focuses on white collar and fraud crimes, a former United States Probation Officer who concentrates on sentencing guideline issues and mitigation efforts, and a former Tampa Police Department Detective who assists in all defense investigations. Their team also includes a support staff of experienced paralegals and dedicated legal assistants All these team members work only for the law firm and directly for you. As a result, there will never be a conflict of interest.
How We Can HELP YOU

Federal Crimes

State Crimes

Appeals and Post-Conviction Motions
Federal/State
Whistleblower Claims

Federal/State
White Collar Crimes

Federal/State
Drug Crimes

Federal/State
Sex Crimes

Criminal Extradition
Mark J. O’Brien’s cases have been featured in













Read What Judges Are Saying
Meet The Team

Mark J. O’Brien, Esquire

Victoria E. Hatfield, Esquire

Shawn P. Napier, Esquire

Justin K. Fahringer, Esquire

Olivia M. Goodman, Esquire

Sheryl C. Johansen, Esquire

Todd J. Murgo, Esquire
Experienced In Both Federal And State Courts
The United States Constitution guarantees every individual the right to a fair trial and the presumption of innocence until proven guilty. This fundamental principle is upheld in federal and state criminal defense, where Mr. O’Brien and Ms. Hatfield work tirelessly to protect the rights of the accused. Whether your case is in federal court or state court, you need the lawyers of O'Brien Hatfield to protect your rights and fight back against prosecutors.
The role of a criminal defense attorney is to provide legal representation to individuals charged with crimes. These crimes can range from drug trafficking and white-collar crimes to murder and sex crimes. The stakes are high, as a conviction can result in lengthy prison sentences, hefty fines, and a criminal record that can follow an individual for the rest of his or her life.
One of the key arguments in favor of hiring O'Brien Hatfield for your federal criminal defense is the importance of protecting the rights of the accused. The Constitution guarantees the right to a fair trial, which includes the right to legal representation. Without skilled attorneys like Mr. O’Brien and Ms. Hatfield, a criminal defendant may not fully understand their rights or the legal process, which can lead to an unfair trial and an unfair result.
Another argument in favor of hiring O'Brien Hatfield is the need to ensure that the government follows due process. The government has vast resources at its disposal, including federal and state law enforcement agencies and prosecutors. A skilled defense attorney like Ms. Hatfield and Ms. Goodman will level the playing field by challenging the government’s evidence and ensuring that you are treated fairly.
White collar crime is a term used to describe non-violent crimes committed by individuals in positions of power or trust, typically in the business or financial sectors. These crimes can include fraud, embezzlement, insider trading, and money laundering, among others. When accused of such crimes, individuals seek the white collar criminal defense services of Mr. O’Brien to represent them in federal criminal court.
Mr. O’Brien’s role is to protect the rights of his clients and ensure they receive a fair trial. This can involve challenging the evidence presented by the prosecution, negotiating plea deals, and presenting a strong defense case. In many cases, wherein trial is not the best option, Mr. O’Brien will work to mitigate the potential consequences of a conviction, such as fines, restitution, and most importantly imprisonment.
One of the key arguments in favor of retaining O'Brien Hatfield is that everyone is entitled to a fair trial, regardless of the nature of the crime they are accused of committing. This is a fundamental principle of the American justice system, and it is the responsibility of the defense attorney to ensure that this principle is upheld. Additionally, Mr. O’Brien, Ms. Hatfield, and Ms. Goodman can help to prevent wrongful convictions by challenging the evidence presented by the prosecution and presenting a strong defense case with his federal criminal defense team.
The federal and state criminal defense lawyers of O'Brien Hatfield are a crucial component of the criminal justice system. They ensure that the rights of the accused are protected, and prosecutors follow due process. While the stakes are high, a skilled criminal defense attorney can make a significant difference in the outcome of a criminal case. Why play games with your life?
“There is absolutely nothing that I can do that would be enough to thank Mark for literally saving my life. As we walked outside of the courthouse, my father in law was so happy and told Mark that, “I have to change your name in my cell phone to JC or Jesus Christ, because you just saved a life, in fact, you just saved the lives of an entire family!” My family and I are so impressed with Mark’s professionalism, demeanor and energy from that first scary day we met in a federal courthouse in Orlando, Florida to the amazing last day we hugged him goodbye standing outside a federal courthouse in Brunswick, Georgia. Thank you Mark for giving me back my life and making it possible for me to have a future!”
Andrew Jackson
After a Southern District of Georgia federal criminal jury found him Not Guilty and Acquitted him of all charges in the indictment in Brunswick, Georgia.