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Contact The Hammer Law Firm

The Hammer Law Firm is located in Clayton, Missouri. We defend clients in the St. Louis metro area and throughout the state of Missouri facing a wide range of criminal charges, from misdemeanor drug possession to murder charges. As an attorney with more than 25 years of experience, including 13 years as a prosecutor, our firm's founding lawyer Mark A. Hammer is dedicated to protecting his clients' rights and freedom.

To contact an attorney at our firm about your legal needs, please complete the form below or call 314-266-7821. Thank you for your interest in our firm. We look forward to hearing from you.

The choice of a lawyer is an important decision and should not be based solely upon advertisements. This disclosure is required by rule of the Supreme Court of Missouri.

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The Hammer Law Firm, LLC
7710 Carondelet Suite 200
St. Louis Area, MO 63105
Phone: 314-266-7821
Toll Free: 888-848-3565
Fax: 314-725-8443
Map and Directions

Criminal Defense Overview

The Hammer Law Firm

The Hammer Law Firm, LLC
7710 Carondelet Suite 200
St. Louis Area, MO 63105
Phone: 314-266-7821
Toll Free: 888-848-3565
Fax: 314-725-8443
Map and Directions

  • Could acid reflux skew DWI tests?

    On behalf of The Hammer Law Firm, LLC posted in DWI/DUI on February 06, 2012.

    When law enforcement and court officials are investigating and prosecuting drunk driving offenses, they often rely heavily on breath and blood tests as evidence of the defendant's alleged wrongdoing. But as with all technology, these tests can make mistakes, and...

  • Argument leads to assault, car theft in St. Louis

    On behalf of The Hammer Law Firm, LLC posted in Assault on February 03, 2012.

    Often, when we hear about a crime on the news or read about one in the paper, it is a major incident involving one or more people in dire situations. What we don't often realize is that criminal offenses can...

  • 'Barefoot Bandit' sentenced for theft crimes

    On behalf of The Hammer Law Firm, LLC posted in Criminal Defense on February 01, 2012.

    The 20-year-old man known as the "Barefoot Bandit" has been sentenced to more than six years in a federal prison, which will be served concurrently with the seven-year sentence he received from a state court judge last month. According to...

  • Missouri police need warrant before testing blood of DWI suspect

    On behalf of The Hammer Law Firm, LLC posted in DWI/DUI on January 28, 2012.

    Last week, the Missouri Supreme Court handed down a ruling that will make it more difficult for police officers to gather blood-alcohol data on drunk driving suspects. Under the high court's verdict, Missouri police officers will be required to obtain...

  • Supreme Court bars GPS tracking without a warrant

    On behalf of The Hammer Law Firm, LLC posted in Criminal Defense on January 24, 2012.

    In a landmark ruling, the Supreme Court of the United States has ruled that police officers must get a search warrant before using a GPS device to track criminal suspects. Analysts believe that the ruling may be the first of...

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