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Legal services

Practice Areas

Attorney Peter Charles Horstmann brings more than 35 years of state and federal court experience to every case. His practice focuses exclusively on criminal defense — from investigation through trial and appeal.

Federal Crimes

Defense of clients charged in United States District Court across a wide range of federal offenses, including drug trafficking, firearms charges, fraud, money laundering, and RICO. Attorney Horstmann has extensive experience navigating federal sentencing guidelines and complex multi-defendant cases.

Drug Offenses

Representation in state and federal drug cases involving possession, distribution, trafficking, and conspiracy charges. Attorney Horstmann challenges the constitutionality of searches and seizures, the reliability of informants, and the sufficiency of the evidence at every stage.

Violent Crimes

Defense of clients charged with assault, armed robbery, home invasion, kidnapping, and homicide. Attorney Horstmann has tried serious violent-crime cases to verdict in Massachusetts Superior Court and in federal court.

White Collar Crime

Representation of individuals and businesses under investigation or indictment for fraud, embezzlement, tax offenses, bribery, and public corruption. Attorney Horstmann works closely with financial experts to analyze complex documentary evidence.

Sex Offenses

Defense of clients charged with sexual assault, rape, indecent assault and battery, and child pornography offenses. Attorney Horstmann provides discreet, aggressive representation and challenges the credibility of accusers and the integrity of investigations.

Appeals & Post-Conviction

Appellate representation in the Massachusetts Appeals Court, Supreme Judicial Court, and the First Circuit Court of Appeals. Attorney Horstmann identifies trial errors, constitutional violations, and newly discovered evidence that may warrant reversal or a new trial.

OUI / DUI Defense

Defense of operating under the influence charges in Massachusetts District and Superior Courts. Attorney Horstmann challenges field sobriety testing, breathalyzer results, and the legality of traffic stops to protect clients' licenses and freedom.

Juvenile Defense

Representation of juveniles charged in the Massachusetts Juvenile Court system. Attorney Horstmann works to protect young clients from adult prosecution and to secure dispositions that prioritize rehabilitation over incarceration.

Facing criminal charges?

Contact Attorney Horstmann for a confidential consultation about your case.

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