Criminal Defense, DWI & Traffic Attorneys in the St. Louis Area
From traffic tickets to state and federal charges, get a clear next step from an attorney. Sander Byrne is based in Clayton and serves clients throughout the St. Louis area. Call our office to tell us what kind of help you need.
Defense focused on your situation
Traffic and DWI
Traffic tickets, DWI allegations and driver's-license concerns can affect your work and daily life. Tell our office where the matter is pending and any upcoming date so an attorney can review the next step.
State charges
Facing a Missouri misdemeanor or felony charge? Sander Byrne represents people in state criminal matters throughout the St. Louis area. An attorney can review your charges, court information and priorities, then discuss the proposed scope and fee.
FEDERAL charges
Federal charges call for careful review of the court, allegations and procedural stage. Our attorneys handle federal criminal defense matters and can discuss the information needed to evaluate representation.
Meet Mark Byrne and Matt Sander
With over 20 years of criminal defense experience in Missouri courts and in federal courtrooms in both Missouri and Illinois, Mark has built a reputation as a strong, reliable advocate. His work has taken him into nearly every courthouse in the state, giving him the knowledge and relationships clients count on. When your future is on the line, you need more than promises — you need proven experience.
Mark Byrne
Founder
Matt has built his practice on careful preparation and a deep understanding of the challenges his clients face. He combines courtroom experience with a detail-oriented approach, balancing strong legal strategy with access to outside resources to help clients with non-criminal issues avoid further contact with law enforcement. Clients value his ability to deliver both rigorous defense and compassionate guidance.
Matt Sander
Partner
What happens after you call
Our office collects your name, callback number and basic information about the matter. Say if you are calling for someone else.
Tell us about custody or an upcoming court date so the request can be flagged for attorney attention. A message does not itself confirm an attorney has responded.
An attorney reviews the request and discusses a callback or meeting, scope of representation and any proposed fee. A call alone does not confirm representation.
Common questions
Can I request an appointment online?
For now, call (314) 231-0777 so the office can help with the request.
Can I call for a family member?
Yes. Tell the office who you are, whom you are calling about, and the best callback number. The caller, prospective client and payer may be different people.
What if I do not have the case number?
Call with the information you do have. The office can identify what is still needed for attorney review.
Will the website quote a fee?
No. An attorney reviews the request before discussing the proposed scope and fee.