TEXAS CRIMINAL DEFENSE LAWYERS
The defense you deserve.
If you or a loved one are accused, charged, or convicted of committing a crime, this is probably the most stressful and challenging time of your life. Our lawyers—a father-daughter team who zealously fight to protect their clients’ Constitutional rights—have decades of experience handling trials and appeals in state, federal, and military courts.
Have you been charged with or convicted of a crime in a Texas, federal, or military court? We can help.
Why should you choose us? We practice criminal defense, and only criminal defense.
Both of our lawyers are board certified in criminal law by the Texas Board of Legal Specialization and the National Board of Trial Advocacy. Terri Zimmermann also is certified in criminal appellate law by the Texas Board of Legal Specialization. This means they have the experience and skill to represent clients in criminal cases and only a small percentage of lawyers have these designations. Also, Jack Zimmermann was inducted into the Texas Criminal Defense Lawyers Association Hall of Fame in 2025.
We can be your lawyer.
Having an experienced, dedicated defense counsel by your side at the trial or appellate level can ensure you have a robust defense and increase your chance of winning your case. We represent clients in Texas, federal, and military cases.
We can help your lawyer.
We can assist your defense lawyer by offering insight based on decades of experience litigating criminal cases at trial and on appeal. We can strategize, draft and review pleadings, and use our expertise to round out your legal team.
PRACTICE AREAS
MILITARY
Military law is the term used to designate the body of case law, statutes, and regulations governing military personnel.
Our firm handles military cases at the trial level, on appeal, and in administrative matters. Two of our three lawyers are certified, experienced judge advocates (military lawyers) authorized to practice in all military jurisdictions worldwide. Both served on active duty as prosecutors and both served as Reservists either as a trial or appellate military judge. We are thoroughly familiar with the military justice and administrative systems.
STATE
Our lawyers have decades of experience representing people who are accused of violating state law. We get involved when the stakes are high, such as in those involving charges of murder, sexual assault, aggravated assault, intoxication assault, and other serious offenses.
We thoroughly prepare for and effectively try cases in state court. And if you have been convicted in a Texas trial court, we will conduct a painstaking factual and legal review and zealously advocate to get the appellate court to reverse the conviction and/or sentence.
FEDERAL
We handle complex investigations and trials involving federal enforcement and regulatory agencies, including the DOJ, FBI, SEC, IRS, and many others. We have experience in matters dealing with the Foreign Corrupt Practices Act (FCPA), environmental issues, bank secrecy act, health care fraud, mail and wire fraud, anti-trust/price fixing, energy/commodities trading issues and other areas. We are often asked to represent officers or directors of public companies in internal as well as external investigations and have been successful in preventing many of our clients from being charged in the first place.
LEGAL BLOG
Recent News
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Terri Zimmermann on STCLH panel–Houston Riots
Ms. Zimmermann was a panel member presenting information about the legal scenario existing at the time of the Houston Riots of 1917 and how the mass trials with no appellate review helped bring major change to the military justice system. https://www.stcl.edu/news/voices-of-houstons-1917-race-riot
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Jack Zimmermann inducted into TCDLA Hall of Fame
In June 2025, Jack Zimmermann was inducted into the TCDLA Hall of Fame. This is an honor reserved for lawyers who have been practicing for a minimum of 30 years, have demonstrated a “substantial commitment to defense of persons accused of crimes on appeal or trial, not to be based solely on won-lost record or…
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Colonel Terri Zimmermann now Reserve Chief Defense Counsel of the Marine Corps
Colonel Terri Zimmermann has completed her tour as a military trial judge and is now serving as the Reserve Chief Defense Counsel of the Marine Corps. She is responsible for assisting the Active Duty Chief Defense Counsel in leading, training, and mentoring all active duty and Reserve defense lawyers in the Marine Corps.
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Terri Zimmermann Receives Outstanding Career Judge Advocate Award
Terri Zimmermann received an award in May for distinguished performance over the course of her 34-year career as a military lawyer. Only one lawyer wins this award every year from the Marine Corps Reserve.