How Expert Witnesses Can Strengthen Your Kentucky Criminal Defense
Expert witnesses play a crucial role in many criminal cases, providing specialized knowledge that helps judges and juries understand complex evidence. At Clark + Harris, we work with a network of qualified expert witnesses to build the strongest possible defense for clients in Lexington, Louisville, and throughout Kentucky.
What Expert Witnesses Do in Criminal Cases
Under Kentucky Rules of Evidence (KRE 702), expert witnesses are qualified to testify when their specialized knowledge will assist the judge or jury in understanding the evidence or determining a fact in issue. Unlike lay witnesses who can only testify about what they personally observed, expert witnesses can provide opinions based on their training, education, and experience. Expert testimony can explain technical evidence, challenge the prosecution’s interpretation of evidence, and provide alternative explanations for the evidence presented.
Types of Expert Witnesses in Criminal Defense
Different types of cases call for different types of experts. In DUI cases, toxicologists can explain how alcohol is absorbed and metabolized, challenge the accuracy of breathalyzer results, and address how medications and medical conditions can affect BAC readings. Forensic experts can challenge blood test results and testing procedures. In drug cases, chemists can challenge the identification and testing of controlled substances, toxicologists can address issues related to drug impairment, and pharmacologists can explain drug interactions and effects.
In assault and violent crime cases, medical experts can challenge the prosecution’s characterization of injuries, use-of-force experts can support self-defense claims, and accident reconstruction experts can address the mechanics of the incident. In cases involving eyewitness identification, psychologists who specialize in memory and perception can educate the jury about the known limitations of eyewitness testimony. Digital forensics experts can analyze electronic evidence including cell phone data, computer records, and social media evidence.
How Expert Witnesses Create Reasonable Doubt
Expert witnesses create reasonable doubt by offering alternative interpretations of the evidence that are consistent with innocence. If a toxicologist can explain that a breathalyzer reading may be unreliable due to calibration issues or medical conditions, the jury may doubt the accuracy of the BAC result. If a forensic expert can show that the crime lab did not follow proper testing protocols, the jury may doubt the identification of a controlled substance. If an eyewitness identification expert explains the factors that make eyewitness identification unreliable, the jury may doubt the identification of the defendant.
Challenging the Prosecution’s Experts
In addition to presenting our own expert witnesses, we also challenge the prosecution’s expert testimony. We examine the qualifications of the prosecution’s experts to determine whether they meet the standards for admissibility. We depose prosecution experts before trial to understand their opinions and identify weaknesses. We cross-examine prosecution experts effectively, using their own concessions to undermine their testimony. We file Daubert motions when appropriate to challenge the reliability of the prosecution’s expert methodology.
Investing in Expert Defense
Expert witnesses represent an investment in your defense, but it is an investment that can pay significant dividends. A strong expert opinion can be the difference between conviction and acquittal, or between a harsh sentence and a favorable outcome. At Clark + Harris, we evaluate every case for opportunities to use expert testimony and invest in expert resources when they can make a meaningful difference in the outcome.
Contact Clark + Harris for Expert-Level Defense
Clark + Harris provides expert-supported criminal defense in Lexington, Louisville, and throughout Kentucky. Call 859-474-0001 for a free consultation.
Related Resources
If this information applied to your situation, the following Clark + Harris guides may also be helpful:
- Duress Defense in Kentucky: When You Were Forced to Commit a Crime
- What Happens If the Victim Doesn’t Want to Press Charges in Kentucky?
- Involuntary Intoxication Defense in Kentucky
- Can You Plea Bargain a Felony Down to a Misdemeanor in Kentucky?
- Statute of Limitations Defense in Kentucky Criminal Cases
- Kentucky Body Camera Laws and Criminal Defense