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Case Results

Our firm's St. Louis criminal defense lawyers, Attorneys Mark Hammer and Nicole Chiravollatti, have been able to use decades of experience, careers as former prosecutors, and a genuine passion for defending the rights of clients to build a record of success. Our legal team is committed to securing the best possible resolutions for our clients, and throughout the years, we've proven that we have what it takes to get the result clients need. Take a moment to view a few of our recent case results.

  • Client charged with 1 count of Felony Assault, 1 count of Misdemeanor Assault and a Second DWI.

    DUI / DWI

    Client charged with 1 count of Felony Assault, 1 count of Misdemeanor Assault and a Second DWI out of a conservative Missouri county. We secured a DISMISSAL of both his Felony and Misdemeanor Assaults, and got him bench probation with no conviction on the DWI
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  • Young, female college student charged with the felony of Delivering a Controlled Substance to a Correctional facility

    Drug Crimes

    Young, female college student charged with the felony of Delivering a Controlled Substance to a Correctional facility in a rural Missouri county. Case dismissed by the court after the preliminary hearing because of our trial skills.
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  • Alleged assault between domestic partners.

    Domestic Violence

    Alleged assault between domestic partners declined for prosecution after attorney's intervention and negotiation with local law enforcement.
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  • Client facing mandatory minimum 10 years on sex-related charge.

    Sex Crimes

    Client facing mandatory minimum 10 years on sex-related charge receives 120 day inpatient treatment program and probation.
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  • Client gets probation on white collar fraud

    White Collar Crimes

    Southeast asian client gets probation on white collar fraud case after successful argument that husband directed her criminal conduct.
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  • Client is accused of domestic assault and must respond to an order of protection

    Domestic Violence

    Husband and wife begin bitter battle after short marriage. Husband is accused of domestic assault and must respond to an order of protection. After successful negotiations with divorce attorney, wife agrees to sign affidavit of non-prosecution and voluntarily consents to dismiss order of protection.
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  • Federal money laundering

    Federal Crimes

    Federal money laundering client receives only six months on negotiated plea agreement.
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  • Client charged with crime of perjury.

    Federal Crimes

    Client charged with crime of perjury after testimony in civil case. Case dismissed after preliminary hearing.
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  • Client was sitting in the St. Louis County jail for over a week on warrants out of six different jurisdictions

    Federal Crimes

    Client was sitting in the St. Louis County jail for over a week on warrants out of six different jurisdictions. After calling The Hammer Law Firm, all of his warrants were cleared within 48 hours and he was a free man.
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  • Misdemeanor trespass case.

    Federal Crimes

    Misdemeanor trespass case dismissed by prosecutor on day of trial.
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  • Deferred prosecution leads to dismissal.

    Theft Crimes

    Deferred prosecution leads to dismissal on casino theft misdemeanor.
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  • Criminal nonsupport client gets suspended imposition of sentence.

    Federal Crimes

    Criminal nonsupport client gets suspended imposition of sentence with no lump sum payment due and no jail time.
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  • Client with criminal history, including 10-year prison stint, faces enhanced sentences on new felonies.

    Drug Crimes

    Client with lengthy criminal history, including 10-year prison stint, faces enhanced sentences on new felony drug case and felony stolen property case in two different counties - result?
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  • Client accused of tax fraud.

    White Collar Crimes

    Accusations of tax fraud lead to civil resolution and no criminal charges.
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  • Federal money laundering.

    Federal Crimes

    Federal money laundering case leads to deferred prosecution and no criminal record.
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  • Client was faced with an executed sentence of 4 years in the Missouri Department of Corrections

    Federal Crimes

    Client was faced with an executed sentence of 4 years in the Missouri Department of Corrections because he picked up a new criminal case while on probation for Leaving the Scene of an Accident in St. Charles County. No revocation of his probation. Instead, his probation was dismissed because of our successful negotiations with the prosecutor and effective advocacy before the court.
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  • Client with prior drug criminal history faces methamphetamine distribution charges

    Drug Crimes

    Client with prior drug criminal history faces methamphetamine distribution charges and significant mandatory sentences in federal court. After successful challenges to government evidence and hard-fought negotiations, the firm successfully negotiates sentence of less than one year.
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  • Military officer charged with domestic assault.

    Domestic Violence

    Military officer charged with domestic assault in a rural Missouri county. Charge dismissed because of our successful negotiations with the prosecuting attorney
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  • Client facing up to 119 years in prison for 17 counts of burglary, stealing and receiving stolen property.

    Theft Crimes

    Client facing up to 119 years in prison for 17 counts of burglary, stealing and receiving stolen property - We got him 7 years with all cases running concurrent with each other - Client will be out of prison in 12 months.
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  • Successful civil settlement.

    Theft Crimes

    Successful civil settlement with client's former employer who accused her of theft.
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  • Out-of-state client charged with two counts marijuana possession and one count drug paraphernalia.

    Drug Crimes

    Out-of-state client charged with two counts marijuana possession and one count drug paraphernalia.
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  • Prominent figure saved from felony stealing charges.

    Theft Crimes

    Prominent figure saved from felony stealing charges after Firm calls police and arranges for quick payment of restitution.
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  • Domestic assault charges.

    Domestic Violence

    Domestic assault charges DISMISSED after Firm arranges for pretrial completion of Victim Impact Panel.
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  • Failure to register case, where client registered 24 hours late.

    Federal Crimes

    Failure to register case, where client registered 24 hours late, dismissed after aggressive defense.
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  • Two clients with 2nd time DWI’s.

    DUI / DWI

    Two clients with 2nd time DWI’s. We recently won their administrative hearings with the Missouri Department of Revenue, saving them from losing their driver’s licenses. Again, we won the hearings because of our trial skills!
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  • Client inadvertently brings knife through airport screening.

    Federal Crimes

    Client inadvertently brings knife through airport screening - case reduced to littering ordinance violation.
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  • Child pornography suspect.

    Sex Crimes

    Child pornography suspect released on own recognizance after attorney contacts authorities before charging.
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  • Client is a good man with a young family and a job who was facing felony drug charges for methamphetamine possession.

    Drug Crimes

    Client is a good man with a young family and a job who was facing felony drug charges for methamphetamine possession. We encouraged him to get treatment and worked out a manageable agreement to walk away from his criminal problem. Now he has been clean for over a year, the charges have been completely dropped, and he has his life back!
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  • Young client’s family calls when spurned girlfriend accuses him of rape.

    Sex Crimes

    Young client’s family calls when spurned girlfriend accuses him of rape. After working closely with law enforcement, and explaining the troubled history and mental condition of the girlfriend, the prosecuting attorney elects to decline charges.
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  • 18-year old contacted by police for alleged sexual act with younger relative.

    Sex Crimes

    18-year old contacted by police for alleged sexual act with younger relative. Case declined by prosecutor after defense investigation and successful negotiations with police department.
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  • Federal gun/drug case.

    Drug Crimes

    Federal gun/drug case sentence successfully reduced from 20 years to less than 7.
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  • Young college student faces charge of using false identification at local casino.

    Federal Crimes

    Young college student faces charge of using false identification at local casino. Police officer recommends case be declined after meetings with counsel.
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  • Client saved from marijuana and drug paraphernalia record.

    Drug Crimes

    Client saved from marijuana and drug paraphernalia record with plea to amended littering citation and small fine.
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  • Federal misdemeanor marijuana possession

    Drug Crimes

    Federal misdemeanor marijuana possession (at the Gateway Arch) dismissed on payment of court costs.
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  • Trespassing and property damage cases.

    Federal Crimes

    Trespassing and property damage cases DISMISSED after payment of restitution.
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  • Client faces felony drug and DWI crimes in 3 counties.

    Drug Crimes

    Client faces felony drug and DWI crimes in 3 counties - coordinated effort leads to dismissals and probation with short period of electronic home monitoring
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  • Woman arrested on east coast after manic episode.

    Theft Crimes

    Woman arrested on east coast after manic episode. Secured release, resolved east coast citations and related theft case dismissed in St. Louis after successful diversion.
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  • Federal misdemeanor charge.

    Drug Crimes

    Federal misdemeanor charge, arising out of possession of small amount of marijuana on the Arch grounds, is dismissed!
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  • Drug case dismissed.

    Drug Crimes

    Drug case dismissed after referral to drug court.
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  • Client was charged with Resisting Arrest.

    Federal Crimes

    Client was charged with Resisting Arrest: CASE DISMISSED.
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  • Federal pseudoephedrine distribution.

    Drug Crimes

    Federal pseudoephedrine distribution (for production of meth) client receives reduced greater than 50% reduction in sentence after variance motion.
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  • Military officer arrested by TSA for key chain pocket knife in his carry on.

    Federal Crimes

    Military officer arrested by TSA for key chain pocket knife in his carry on. Concealed carry violation DISMISSED!
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  • Expungement of check fraud arrest record

    White Collar Crimes

    Expungement of check fraud arrest record along with successful immigration petition for NEXUS easy border crossing card.
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  • Client facing jail time on a 2nd time DWI

    DUI / DWI

    Client facing jail time on a 2nd time DWI - Prosecutor amended the charge down to “Careless and Imprudent Driving” with a fine.
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  • Client faces up to 15 years on Class B felony drug distribution.

    Drug Crimes

    Client faces up to 15 years on Class B felony drug distribution - we got him into drug treatment court!
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  • Client free after sexual misconduct case.

    Sex Crimes

    Client free after sexual misconduct case ends in mistrial.
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  • Client picked up two charges of felony stealing while on parole.

    Drug Crimes

    Client picked up two charges of felony stealing while on parole for drug distribution and was facing up to 30 additional years in prison. We got him a complete dismissal of one charge, a Suspended Imposition of Sentence (no conviction) on the other charge, with only 3 years of probation, AND the parole officer’s commitment to not violate his parole.
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  • Drug Possession, Stealing, & Drug Paraphernalia Charges

    Drug Crimes

    Client charged with stealing, possession of marijuana, and possession of drug paraphernalia. All charges dismissed.
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  • Client on Probation for DWI Charged with Felony DWI

    DUI / DWI

    The client was on probation for driving while intoxicated (DWI) with a six-month jail backup. While on probation, the client was charged with felony DWI. After retaining The Hammer Law Firm, the client will continue probation with no jail time.
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  • Client Facing Up to 15 Year Sentence for Multiple Charges.

    Federal Crimes

    Client with approximately 20 prior criminal arrests and convictions was facing up to 15 years in prison. After our legal team's skillful and relentless work, our client received only three years of probation.
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  • Client charged with 2 counts of Statutory Sodomy

    Sex Crimes

    Client charged with 2 counts of Statutory Sodomy 1st Degree in a rural and conservative county in Missouri. After a jury trial, our client was found NOT GUILTY of all charges against him.
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  • Client with health issues receives probation on federal methamphetamine case.

    Drug Crimes

    Client with health issues receives probation on federal methamphetamine case where she was buying pseudoephedrine pills to supply boyfriend's addiction.
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  • City prosecutor recommends 3 years in prison.

    Federal Crimes

    City prosecutor recommends 3 years in prison but client gets suspended imposition of sentence and no jail time!
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  • Client was charged with 1st-Degree Robbery.

    Theft Crimes

    Client was charged with 1st-Degree Robbery with a recommendation from the State of 15 years in the Missouri Department of Corrections. After hiring The Hammer Law Firm: Drug treatment with probation and no conviction.
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  • Mother & daughter each charged with felony assault on police officer.

    Domestic Violence

    Mother & daughter each charged with felony assault on police officer after police turned against victim of domestic disturbance. Mother's case dismissed at preliminary hearing. Daughter plead to amended misdemeanor with community service.
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  • Five counts of felony prescription fraud.

    Drug Crimes

    Five counts of felony prescription fraud reduced to two misdemeanor counts of drug paraphernalia.
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  • Cold case sex offense.

    Sex Crimes

    Cold case sex offense declined by prosecutor after intervention by counsel.
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  • Twenty-three year old with two priors faces mandatory life in prison.

    Drug Crimes

    Twenty-three year old with two priors faces mandatory life in prison on federal drug case but gets 10 years after lengthy, tough negotiations.
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  • Firearms dealer exonerated against ATF claims of improper sales.

    Federal Crimes

    Firearms dealer exonerated against ATF claims of improper sales.
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  • Client charged with marijuana possession in a conservative, rural county with a “zero tolerance” policy.

    Drug Crimes

    Client charged with marijuana possession in a conservative, rural county with a “zero tolerance” policy - Prosecutor agreed to “deferred prosecution” with the completion of a drug class.
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  • Client with domestic assault charges in two different jurisdictions.

    Domestic Violence

    Client with domestic assault charges in two different jurisdictions - All charges dropped down by prosecutor to Littering with a fine
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  • Felony Identity Theft & Felony Fraudulent Use of a Credit Card Device

    White Collar Crimes

    The Hammer Law Firm successfully negotiated the dismissal of one count and a reduction of the other count to a misdemeanor, with no conviction and probation with the court (no reporting to a probation officer).
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  • Felony Identity Theft & Felony Fraudulent Use of a Credit Card Device

    White Collar Crimes

    The Hammer Law Firm successfully negotiated the dismissal of one count and a reduction of the other count to a misdemeanor, with no conviction and probation with the court (no reporting to a probation officer).
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  • Facing 10 years to life found Not Guilty on 2 counts of Statutory Sodomy

    Sex Crimes

    The client, a respected professional, nearly lost everything when falsely accused of statutory sodomy by a member of the family. A guilty verdict on any count meant imprisonment for 10 years to life, not to mention a lifetime of sex offender registration. The Hammer Law Firm performed it's own comprehensive investigation, and left no stone unturned in its pursuit of the truth.NOT GUILTY on all counts!
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  • Client facing two felony Drug Possession charges

    Drug Crimes

    Client with a history of serving prison time was charge with two felony drug possession charges in different jurisdictions.

    After successful negotiations with prosecutors, she was accepted into drug court!
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  • Client facing prison time for failure to pay restitution

    Federal Crimes

    Client facing prison time for failure to pay restitution on a felony probation case was successfully discharged from probation!
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  • Juvenile facing detention on serious felony allegations

    Federal Crimes

    A Juvenile who was facing detention on serious felony allegations was released to the custody of family members!
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  • Case Dismissed

    Drug Crimes

    The Hammer Law Firm, LLC is pleased to announce that our team has recently secured a successful case dismissal on behalf of a client!

    The case involved law enforcement officers responding to a domestic assault call at our client’s home. When they arrived, our client insisted that she was not a victim of domestic violence. Still, officers entered and searched her home.

    After searching the residence, officers found legally purchased weapons and prescription medication belonging to the client. Despite the fact that our client had a valid prescription, she was charged with felony possession of a controlled substance and was offered a plea deal to testify against her husband - a felon - that the guns belonged to him. Our client rejected the plea deal.

    Ultimately, it was determined from lab results that our client was legally prescribed the controlled substance in question. Because the prescription was valid, our client did not have to testify against her spouse and her case was dismissed!

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  • Client charged with Failure To Comply with Police Officer

    Federal Crimes

    After The Hammer Law Firm's successful negotiations with the prosecuting attorney, his case was dismissed!
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  • Client on probation charged with assault

    DUI / DWI

    Our client was on probation for DWI when she picked up an assault case. We got the assault case dismissed and kept our client on her original probation with no jail time or additional conditions!
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  • Not Guilty Verdict

    Sex Crimes

    The accomplished trial team of Hammer and Chiravollatti just won another significant battle in the courtroom.

    The client, a respected professional, nearly lost everything when falsely accused of statutory sodomy by a member of the family. A guilty verdict on any count meant imprisonment for 10 years to life, not to mention a lifetime of sex offender registration. The Hammer Law Firm, LLC performed its own comprehensive investigation and left no stone unturned in its pursuit of the truth.

    After a three-day battle in Jefferson County, the jury returned with its verdict in just over an hour - not guilty on all counts!

    There is no greater privilege for a criminal trial attorney to pursue the vindication of the falsely accused. The attorneys at The Hammer Law Firm, LLC take that responsibility very seriously and are very pleased with the outcome.
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  • Client charged with felony possession of a controlled substance

    Domestic Violence

    Police answered a domestic assault call at the client's home. The client insisted that she was not a victim of a domestic assault but police came in and searched her home anyway. The find guns legally purchased and prescription medication belonging to the client. The client was charged with felony possession of a controlled substance and offered a deal to testify against her spouse, a felon, that the guns belonged to him.

    NO DEAL!

    Lab results concluded that the controlled substance was prescribed (so the possession was lawful) and the client does not have to testify against her spouse.

    CASE DISMISSED!
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  • Client accused of a serious sex crime found not guilty

    Sex Crimes

    Client accused of a serious sex crime was vindicated, saved from lengthy improsonment and the stigma of lifetime sex offender registration. Six months of diligent preparation was reduced to an intense 2-day trial. An hour after closing arguments, the jury returned its not guilty verdict.
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  • Charged with Interfering with a Police Officer and Making False Statements

    Domestic Violence

    A client of The Hammer Law Firm was wrongfully charged with Interfering with a Police Officer and Make False Statements while engaged in a domestic dispute regarding the custody of her young child.

    All charges dismissed!!
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  • Domestic Assault Charge

    Domestic Violence

    Client was charged with Domestic Assault against his ex-wife and not only faced a criminal record, but also risked losing his career - Charge dismissed!
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  • Case Dismissed for 1st Degree Burglary Charge

    Theft Crimes

    Client charged with Burglary in the 1st Degree was facing up to 15 years in prison - case dismissed by the State after successful deposition of victim by The Hammer Law Firm's attorneys!
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  • Case Dismissed for Felony Domestic Assault Charge

    Domestic Violence

    Client charged with Felony Domestic Assault was facing up to seven years in prison - Case dismissed after skillful lawyering by The Hammer Law Firm's attorneys!
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  • Charges Dismissed - 4 counts of Sexual Misconduct

    Sex Crimes

    Client charged with 4 counts of "Sexual Misconduct" in a rural county - All sex charges dismissed - client pled guilty to one count of "Peace Disturbance" with no probation and a $200 fine!
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Recognized in the industry

  • National Association of Criminal Defense Lawyers
    National Association of Criminal Defense Lawyers
  • American Bar Association
    American Bar Association
  • The Bar Association of Metropolitan St. Louis
    The Bar Association of Metropolitan St. Louis
  • Missouri Association of Criminal Defense Lawyers
    Missouri Association of Criminal Defense Lawyers
  • Super Lawyers
    Super Lawyers

Client Testimonials

  • "I could not have imagined getting through this difficult and uncertain time without the help of the Hammer Law Firm."
    - E.M
  • "You don't know how much of a blessing you are to us"
    - C.G
  • "Mark and Nicole are the best law firm partners ever."
    - C.E
  • "Mark and Nicole are the best at getting to the truth of the matter and dedicated to your clients"
    - Vicki H.
  • "Mark Hammer is a decisive, direct, and conscientious attorney. I would definitely recommend him to others."
    - Anonymous
  • "Mark Hammer is a gentleman, exudes confidence and relieves stress with his truth"
    - Anonymous
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Why Trust Our St. Lous Criminal Defense LAw Firm?

  1. More than 30 years of criminal law experience.
  2. Former prosecutors who know how the
    "other side" operates.
  3. Accessibility and availability – clients can
    always reach our attorneys.
  4. Personalized, one-on-one attention.
  5. Tough negotiators and proven trial lawyers.
Get Immediate Help

Our attorneys are dedicated to working
directly with all our clients.

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