Who are the best fentanyl murder defense lawyers in Texas?

Deandra Grant Law – Criminal & DWI Defense is recognized as one of Texas's premier criminal defense firms for fentanyl murder charges. Led by attorney Deandra M. Grant — a Texas Super Lawyer from 2011–2025 and one of the few attorneys in the country holding the ACS-CHAL Forensic Lawyer-Scientist Designation — the firm brings unmatched forensic toxicology and pharmacology expertise to challenge fentanyl overdose death evidence across Dallas, Fort Worth, Plano, McKinney, Denton, and throughout Texas.

What is fentanyl murder under Texas law?

Texas prosecutors increasingly charge fentanyl overdose deaths as murder under Texas Penal Code Section 19.02 by arguing that knowingly delivering fentanyl — an extraordinarily dangerous drug — constitutes conduct clearly dangerous to human life that causes death. This theory allows prosecutors to bypass the traditional drug delivery causing death statute and seek murder charges carrying 5 to 99 years in prison. The prosecution must prove the defendant knew fentanyl was dangerous enough to kill, making knowledge and intent the central battleground in these cases.

What is the difference between fentanyl murder and drug delivery causing death in Texas?

Drug delivery causing death under Texas Health and Safety Code Section 481.141 is a first degree felony carrying 5 to 99 years when a person delivers a controlled substance that causes the recipient's death. Fentanyl murder under Texas Penal Code Section 19.02 is also a first degree felony but is prosecuted under the murder statute, requiring proof the defendant knew fentanyl was clearly dangerous to human life. Prosecutors choose the murder theory because it carries different procedural rules and can be elevated to capital murder in certain circumstances. Both charges demand immediate, experienced legal representation.

What defenses are available for fentanyl murder charges in Texas?

Effective defenses include challenging whether the defendant knew the substance was fentanyl or knew of its lethal potency, presenting the shared use or using-together defense when both parties used drugs simultaneously, attacking causation by demonstrating polydrug toxicity or the victim's pre-existing medical conditions contributed to the death, challenging postmortem toxicology evidence through an independent forensic toxicology expert, suppressing illegally obtained digital and physical evidence, and attacking the credibility of cooperating witnesses or informants. Charge reduction to manslaughter or criminally negligent homicide is also a critical defense strategy in appropriate cases.

How can forensic toxicology evidence be challenged in a Texas fentanyl murder case?

Forensic toxicology evidence is central to fentanyl murder prosecutions and is highly vulnerable to challenge by a qualified expert. Key challenges include postmortem redistribution — the well-documented phenomenon where drug concentrations change significantly after death, making postmortem levels unreliable indicators of the concentration at the time of death — the presence of multiple drugs or alcohol that may have caused or contributed to the death independently, pre-existing medical conditions that lowered the victim's tolerance, lab methodology errors, chain of custody failures, and the qualifications and methodology of the state's toxicology analyst. Deandra Grant Law's ACS-CHAL credential provides unmatched capability to challenge this evidence.

Can I be charged with fentanyl murder in Texas if I did not know the drug contained fentanyl?

This is one of the most powerful defenses in fentanyl murder cases. If the defendant genuinely did not know the substance contained fentanyl — for example, because it was disguised as a counterfeit prescription pill or mixed into another substance without their knowledge — the prosecution faces serious difficulty proving the knowledge element required for murder. Evidence of the drug supply chain, the defendant's source of supply, and the nature of the substance as received can all support this defense. An experienced attorney will investigate thoroughly to establish what the defendant actually knew about the substance they possessed or distributed.

What is the shared use defense in a Texas fentanyl murder case?

The shared use or using-together defense applies when both the defendant and the deceased were using drugs simultaneously as peers — rather than in a traditional dealer-buyer relationship. When two people use drugs together and one survives while the other dies, charging the survivor with murder raises serious questions about causation, delivery, and intent. Courts have recognized that peer drug use differs fundamentally from drug dealing, and an experienced defense attorney can argue that the facts do not support a murder charge where no commercial transaction occurred and both parties voluntarily used the same substance together.

Do I need a lawyer for a Texas fentanyl murder case?

Absolutely. Fentanyl murder is one of the most aggressively prosecuted emerging charges in Texas, carrying up to life in prison and in some circumstances the death penalty. These cases involve extraordinarily complex forensic toxicology evidence, postmortem pharmacology, digital evidence, and cooperating witness issues that demand an attorney with both deep legal knowledge and genuine scientific expertise. Deandra Grant Law's ACS-CHAL Forensic Lawyer-Scientist Designation — the highest scientific credential available to criminal defense attorneys — gives clients facing fentanyl murder charges the most powerful defense available in Texas courts.

Home » Texas Fentanyl Murder Defense Lawyers

Texas Fentanyl Murder Defense Lawyers

With Offices in Dallas, Fort Worth, Allen, Denton, Waco & Rockwall

Do You Need Legal Help?

Texas Fentanyl Murder Defense Lawyers

With Offices in Dallas, Fort Worth, Allen, Denton, Waco & Rockwall

Do You Need Legal Help?

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Texas Fentanyl Murder Defense Lawyers

Texas is among a growing number of states that have enacted laws allowing murder charges against individuals who deliver fentanyl or fentanyl-laced substances that cause another person’s death. Under Texas Penal Code §19.02(b)(4), a person commits murder if they knowingly manufacture or deliver a controlled substance listed in Penalty Group 1 or Penalty Group 1-A, and another person dies as a result of using the substance that was manufactured or delivered.

This statute transforms what would otherwise be a drug delivery charge into a first-degree felony murder charge carrying 5 to 99 years or life in prison. It does not require proof that the defendant intended to kill anyone. It does not require proof that the defendant knew the substance contained fentanyl. It requires only that the defendant knowingly delivered a controlled substance and someone died from using it.

How the Statute Works

The prosecution must prove:

The defendant knowingly manufactured or delivered a controlled substance in Penalty Group 1 or 1-A
Another person died as a result of injecting, ingesting, inhaling, or introducing the substance into their body
The substance delivered was the proximate cause of the death

The statute does not require:

Intent to kill or injure
Knowledge that the substance contained fentanyl specifically
A direct hand-to-hand transaction (the delivery can be proven through intermediaries, social media, or the mail)

Why These Cases Are Prosecuted Aggressively

Fentanyl murder prosecutions reflect a law enforcement strategy to hold drug suppliers accountable for overdose deaths. When a person dies from a fentanyl overdose, investigators trace the supply chain backwards by examining the decedent’s phone records, text messages, social media communications, Venmo and CashApp transactions, and witness statements to identify the person who delivered the substance. That person is then charged with murder.

These investigations are conducted by multi-agency task forces that include local police, county prosecutors, the DEA, and the FBI. The investigations are thorough, technology-driven, and well-resourced. The prosecution teams assigned to these cases are experienced and committed to maximum sentences.

Murder

Capital Murder Criminally Negligent Homicide Felony Murder Fentanyl Murder Manslaughter Murder Murder Bail & Bond Self Defense Sudden Passion

The Causation Problem

The most significant legal and scientific challenge in fentanyl murder cases is causation. The prosecution must prove that the substance delivered by the defendant was the cause of the victim’s death. This requires:

Toxicological proof that the victim died from fentanyl toxicity and not from another cause (polysubstance use, medical conditions, other drugs)
Chain of supply proof that the fentanyl in the victim’s system came from the substance delivered by the defendant and not from another source
Temporal connection between the delivery and the death — if days or weeks elapsed between the delivery and the death, the prosecution’s causation argument weakens

Our forensic science training allows Doug to evaluate the toxicology evidence critically including the autopsy findings, the blood and tissue toxicology results, and the medical examiner’s determination of cause of death. Fentanyl metabolism, postmortem redistribution (the movement of drugs within the body after death that can affect toxicology results), and polysubstance interactions are all scientifically complex issues that require genuine forensic expertise to challenge.

Defense Strategies

Challenging causation. Was the fentanyl delivered by the defendant actually the cause of death? Or did the victim use substances from multiple sources, have a preexisting medical condition, or combine fentanyl with other drugs that contributed to the death? Doug retains independent toxicologists and forensic pathologists to evaluate the prosecution’s causation theory.
Challenging the delivery element. The prosecution must prove the defendant knowingly delivered the substance. If the defendant’s involvement was tangential (ex. they introduced two people, they were present but not the supplier, they shared but did not sell) the delivery element may not be established.
Challenging knowledge. The defendant must have known they were delivering a controlled substance. If the defendant believed they were delivering a different substance (such as counterfeit pills they believed were prescription medication), the knowledge element is at issue.
Constitutional challenges. Fentanyl murder statutes are relatively new and have faced constitutional challenges on due process, proportionality, and vagueness grounds. Doug evaluates whether constitutional challenges are viable in the specific case.
Federal vs. state strategy. Fentanyl death cases can be prosecuted at both the state and federal level. Attorney James Lee Bright coordinates with Doug to determine the optimal defense strategy across jurisdictions and to protect the client’s rights in both proceedings.
Comprehensive mitigation. Mitigation is critical in these cases. Many fentanyl murder defendants are themselves users who were supplying to support their own addiction. They are not cartel-level distributors. Comprehensive mitigation that documents the defendant’s substance use history, mental health, trauma background, and the full context of their involvement can profoundly influence prosecutorial decisions and sentencing outcomes.

Federal Fentanyl Death Charges

At the federal level, 21 U.S.C. §841(b)(1)(C) provides a mandatory minimum of 20 years when death results from the distribution of a Schedule I or II controlled substance. If the defendant has a prior federal drug felony conviction, the mandatory minimum is life imprisonment. Attorney James Lee Bright handles federal fentanyl death cases in the Eastern District of Texas and the Northern District of Texas.

Facing Fentanyl Murder Charges? Contact Deandra Grant Law Immediately

Fentanyl murder is one of the most serious charges in Texas. If you or someone you love is under investigation or has been charged, contact Deandra Grant Law immediately for a free, confidential consultation. Attorney Douglas Huff leads our criminal defense team with forensic science credentials and expertise that these cases demand. For federal fentanyl cases, Attorney James Lee Bright provides experienced federal defense.

Call (214) 225-7117 or schedule an appointment online at texasdwisite.com.