Tharp v. Commonwealth (1990): Defining the Parameters of Prior Bad Acts Evidence Under KRE 404(b)

Tharp v. Commonwealth, 788 S.W.2d 253 (Ky. 1990), is a foundational Kentucky case addressing the admission of prior bad acts evidence under what is now Kentucky Rule of Evidence 404(b). The decision established critical guidelines for when the prosecution may introduce evidence of a defendant’s other crimes, wrongs, or acts — an issue that arises with extraordinary frequency in criminal trials across Lexington, Louisville, and throughout the Commonwealth.

The Facts of the Case

The defendant was charged with a criminal offense, and the prosecution sought to introduce evidence of the defendant’s prior bad acts — other crimes or misconduct not directly related to the charged offense — to prove elements such as motive, intent, identity, absence of mistake, or a common plan or scheme. The defendant objected to the admission of this evidence, arguing that it was being used improperly to show the defendant’s propensity to commit crimes — a purpose explicitly prohibited by KRE 404(b).

The Legal Issue

The question was what standards and procedures Kentucky courts must follow when evaluating the admissibility of prior bad acts evidence under KRE 404(b), which provides that evidence of other crimes, wrongs, or acts is not admissible to prove the character of a person to show action in conformity therewith, but may be admissible for other purposes such as proof of motive, opportunity, intent, preparation, plan, knowledge, identity, or absence of mistake or accident.

The Court’s Holding and Reasoning

The Kentucky Supreme Court established a rigorous analytical framework for evaluating KRE 404(b) evidence. The Court held that before admitting prior bad acts evidence, the trial court must: (1) determine that the evidence is being offered for a permissible purpose under KRE 404(b) and not merely to show criminal propensity; (2) find that the evidence is relevant to a material issue in the case; and (3) conduct a KRE 403 balancing test to ensure that the probative value of the evidence is not substantially outweighed by the danger of undue prejudice.

The Court emphasized that KRE 404(b) is a rule of exclusion, not inclusion. The prosecution bears the burden of demonstrating that the prior bad acts evidence fits within one of the enumerated exceptions and that its probative value outweighs its prejudicial potential. Additionally, the trial court should give a limiting instruction directing the jury to consider the evidence only for the permitted purpose and not as evidence of the defendant’s character or propensity to commit crime.

Impact on Kentucky Criminal Defense Today

KRE 404(b) is one of the most litigated evidentiary issues in Kentucky criminal courts. In Lexington, Louisville, and throughout the Commonwealth, prosecutors frequently attempt to introduce evidence of a defendant’s prior conduct to strengthen their case. Defense attorneys must be vigilant in challenging such evidence.

Effective defense strategies include filing pretrial motions in limine to exclude prior bad acts evidence, demanding that the prosecution articulate the specific permissible purpose for the evidence, arguing that the evidence’s prejudicial impact substantially outweighs its probative value under KRE 403, and requesting limiting instructions when prior bad acts evidence is admitted.

The admission of improper KRE 404(b) evidence is one of the most common bases for appellate reversal in Kentucky criminal cases, making pretrial litigation on this issue critically important.

How Clark + Harris Uses This Precedent

At Clark + Harris, we understand that improper character evidence can poison a jury against our client before the facts of the case are even heard. Our criminal defense attorneys in Lexington and Louisville aggressively litigate KRE 404(b) issues, filing detailed motions in limine and fighting to keep prejudicial prior bad acts evidence away from the jury. When such evidence is improperly admitted, we preserve the issue for appeal.

Understanding Kentucky case law is what separates experienced criminal defense attorneys from the rest. If the prosecution is trying to use your past against you, call Clark + Harris at 859-474-0001 to protect your rights.

Related Resources

If this information applied to your situation, the following Clark + Harris guides may also be helpful:

Tharp v. Commonwealth (1990): KRE 404(b) Prior Bad Acts Evidence in Kentucky Criminal Trials