When the Defense Calls the KCPC Competency Evaluator: No Conley “Wall” Violation from Wide-Open Cross on Criminal Responsibility; Surprise Expert Diagnosis Changes Permit Exclusion

I. Introduction

In Marsha Lynn Miller v. Commonwealth of Kentucky, the Supreme Court of Kentucky affirmed Marsha Lynn Miller’s murder conviction and thirty-year sentence arising from a fatal vehicular collision in a parking lot. The central dispute at trial was not whether Miller struck and killed Frank Harris, but her mental state—including an insanity defense based on psychosis, claimed hallucinations, and substance use (Delta-8).

The appeal presented four issues: (1) whether the Commonwealth’s cross-examination of a KCPC competency evaluator improperly crossed the “wall” discussed in Conley v. Commonwealth; (2) whether admission of medical/school records through expert cross-examination violated KRE 703 safeguards; (3) whether excluding the defense criminal-responsibility expert was an abuse of discretion after the expert changed his diagnosis mid-testimony; and (4) whether the jury should have been instructed on reckless homicide.

Although designated “NOT TO BE PUBLISHED” under RAP 40(D), the decision is instructive on trial management of mental-health evidence, discovery compliance for experts, the breadth of cross-examination when insanity is raised, and limits on lesser-included instructions.

II. Summary of the Opinion

The Court affirmed on all grounds:

  • No Conley wall breach: because Miller—not the Commonwealth—called the KCPC competency evaluator (Dr. Allen), and the Commonwealth’s questions on criminal responsibility were permissible under KRE 611(b) once insanity was at issue.
  • No palpable error under KRE 703: objections were not timely and specific under RCr 9.22; while findings under KRE 703(b) were not made, any error was not “palpable” under RCr 10.26 given overwhelming evidence and limited prejudice.
  • Exclusion of Dr. Ebben upheld: the defense expert’s diagnosis changed in a material way from his disclosed report, implicating RCr 7.24(3)(a) and fairness concerns; additionally, the Court emphasized that an insanity defense cannot be “bootstrapped” primarily through the defendant’s uncross-examined out-of-court statements when the defendant does not testify.
  • No reckless homicide instruction required: the evidence did not support a “straight” reckless homicide theory under Commonwealth v. Hasch; accelerating a car toward a pedestrian did not permit a rational finding that Miller failed to perceive a substantial risk of death.

Justice Thompson concurred in result only, sharply criticizing the admission of records without proper KRE 703(b) gatekeeping and foundation, but agreeing the error was not palpable due to overwhelming evidence.

III. Analysis

A. Precedents Cited (and How They Shape the Holding)

1. KCPC evaluators, “walling off,” and cross-examination: Conley v. Commonwealth and related authority

Miller framed the Commonwealth’s cross-examination of Dr. Allen as a violation of Conley v. Commonwealth, 599 S.W.3d 756 (Ky. 2019). Conley addressed a structural fairness problem: when a KCPC evaluator—an agent of the court in competency proceedings—was “repurposed” into the Commonwealth’s rebuttal witness on criminal responsibility after the defendant later received Ake funding. To prevent the Commonwealth from gaining an unfair advantage from a court-ordered evaluation, Conley stated that, where KCPC is used for both sides, evaluators should be separated and “walled off.”

The Miller Court limited Conley to its core concern: the Commonwealth using the initial KCPC evaluator/report as its own rebuttal evidence. Here, the Court emphasized:

  • Dr. Allen’s KCPC role remained a competency evaluation (court-agent concept drawn from Gabbard v. Commonwealth, 887 S.W.2d 547 (Ky. 1994)).
  • Both parties had separate experts available—avoiding the Ake “equalization” defect Conley sought to cure.
  • Critically, the defense called Dr. Allen. Once the defense put him before the jury in support of insanity, KRE 611(b)’s “wide open” cross-examination permitted inquiry relevant to criminal responsibility.

The Court’s treatment of Ake v. Oklahoma, 470 U.S. 68 (1985) is similarly functional: Ake demands meaningful defense access to mental-health expertise when sanity is significant; it does not create an evidentiary shield preventing the Commonwealth from cross-examining a defense-called expert on an issue the defense has injected into the case.

2. Insanity burden and framing: Star v. Commonwealth and Edwards v. Commonwealth

The Court reinforced that insanity is an affirmative defense with a defined statutory test and burden: Star v. Commonwealth, 313 S.W.3d 30 (Ky. 2010) (quoting Edwards v. Commonwealth, 554 S.W.2d 380 (Ky. 1977) and KRS 504.020) states the defendant must prove that, due to mental disease or defect, she lacked substantial capacity to appreciate criminality or conform conduct to law. This framing supported allowing the Commonwealth to test, on cross-examination, whether Dr. Allen’s observations actually supported that legal standard.

3. Preservation, palpable error, and KRE 703: MV Transp., Inc. v. Allgeier, Clay v. Commonwealth, and the palpable-error line

The Court’s KRE 703 discussion is tightly coupled to preservation doctrine. Under RCr 9.22, objections must be contemporaneous and specific; trial judges are not required to sua sponte police evidentiary boundaries. For that proposition the Court relied on MV Transp., Inc. v. Allgeier, 433 S.W.3d 324 (Ky. 2014). The Court also cited Clay v. Commonwealth, 291 S.W.3d 210 (Ky. 2008) for the principle that failing to timely request relief (such as an admonition) undermines preservation.

With the issue unpreserved, review proceeded under RCr 10.26: palpable error must be “manifest, fundamental and unambiguous” (quoting Johnson v. Commonwealth, 676 S.W.3d 405 (Ky. 2023), which quotes Martin v. Commonwealth, 207 S.W.3d 1 (Ky. 2006) and Chavies v. Commonwealth, 374 S.W.3d 313 (Ky. 2012)).

4. KRE 703’s gatekeeping function: Hoff v. Commonwealth and Exantus v. Commonwealth

On the merits, the Court recited the KRE 703 framework through Hoff v. Commonwealth, 394 S.W.3d 368 (Ky. 2011) and Exantus v. Commonwealth, 612 S.W.3d 871 (Ky. 2020):

  • KRE 703(a): experts may base opinions on inadmissible facts/data if reasonably relied upon in the field.
  • KRE 703(b): otherwise inadmissible facts/data may be disclosed to the jury only if “trustworthy, necessary to illuminate testimony, and unprivileged,” and—upon request— the jury must be admonished to use the information only to evaluate the expert’s opinion.
  • KRE 703(c): preserves robust cross-examination to test the basis of the opinion.

The Court also invoked wide-open cross principles via Commonwealth v. Armstrong, 556 S.W.3d 595 (Ky. 2018) and KRE 611.

Yet the majority treated the trial court’s failure to make explicit KRE 703(b) findings as “technically erroneous” but not outcome-determinative, citing Brewer v. Commonwealth, 206 S.W.3d 343 (Ky. 2006) to anchor the “no palpable prejudice” conclusion.

Justice Thompson’s concurrence, however, leaned heavily on the strict-gatekeeping language in Exantus and cited Rabovsky v. Commonwealth, 973 S.W.2d 6 (Ky. 1998)—underscoring that KRE 703(b)’s factual determinations are the “only safeguard” against backdoor admission of hearsay embedded in records.

5. Expert discovery and sanction: Terry v. Commonwealth, Jones v. Commonwealth, and Barnett v. Commonwealth

The Court upheld excluding Dr. Ebben primarily through the lens of RCr 7.24(3)(a) and the fairness purpose described in Terry v. Commonwealth, 332 S.W.3d 56 (Ky. 2010). The Court reiterated that disclosure prevents surprise and delay (quoting United States v. Davis, 93 F.3d 1286 (6th Cir. 1996)), and that the rule is triggered when the defense offers mental-condition expert testimony bearing on guilt or punishment (also referencing Powell v. Graham, 185 S.W.3d 624 (Ky. 2006)).

The Court contrasted cases about scope and surprise: Jones v. Commonwealth, 237 S.W.3d 153 (Ky. 2007) (limiting expert was abuse where disagreement with opposing methodology should not have surprised the Commonwealth given the report) versus Barnett v. Commonwealth, 763 S.W.2d 119 (Ky. 1988) (error to allow testimony on a matter absent from the expert’s report). Miller is aligned with Barnett: when the report says one diagnosis and the testimony pivots to another, the Commonwealth’s ability to prepare and cross-examine is compromised.

6. “Bootstrapping” mental-state defenses through out-of-court statements: Padgett v. Commonwealth and Talbott v. Commonwealth

Beyond discovery, the Court supplied an independent barrier to the proffered insanity proof: under Padgett v. Commonwealth, 312 S.W.3d 336 (Ky. 2010) (quoting Talbott v. Commonwealth, 968 S.W.2d 76 (Ky. 1998)), a defendant who does not testify cannot “bootstrap” a mental-state defense through an expert opinion premised primarily on the defendant’s uncross-examined, out-of-court narrative. The Court applied that logic to Miller’s alleged hallucinations: the only report of a command hallucination came from Miller to Dr. Ebben, and Miller did not testify.

7. Lesser-included instructions and recklessness: Lackey v. Commonwealth and Commonwealth v. Hasch

The instruction analysis follows the modern Kentucky instruction framework: Sargent v. Shaffer, 467 S.W.3d 198 (Ky. 2015) (quoting Springfield v. Commonwealth, 410 S.W.3d 589 (Ky. 2013), and noting it was overruled on other grounds by Univ. Med. Ctr., Inc. v. Shaub, 628 S.W.3d 112 (Ky. 2021)), plus Lackey v. Commonwealth, 468 S.W.3d 348 (Ky. 2015) (no speculative theories; lesser-included required only when a rational juror could acquit on the greater and convict on the lesser).

For reckless homicide, the controlling concept was drawn from Commonwealth v. Hasch, 421 S.W.3d 349 (Ky. 2013): “straight” reckless homicide requires failure to perceive a substantial and unjustifiable risk of death. The Court analogized Miller’s acceleration of a vehicle toward a pedestrian to Hasch’s close-range firearm discharge: no rational juror could find a failure to perceive the risk of death inherent in that conduct. Therefore, refusing the reckless-homicide instruction was not an abuse of discretion.

B. Legal Reasoning

  1. Conley is about party-switching and unfair advantage—not about limiting legitimate cross of a defense-called KCPC evaluator. The Court treated the “wall” as a structural safeguard against the Commonwealth appropriating the court’s evaluator as a prosecution witness after the fact. Where the defense elects to call the KCPC evaluator, ordinary cross-examination doctrine applies.
  2. KRE 611(b) operates as the doctrinal bridge: once the defense placed insanity in issue and used Dr. Allen’s diagnostic testimony to argue legal insanity, questioning whether Miller appreciated criminality became relevant and within wide-open cross.
  3. Preservation controls the KRE 703 outcome: because counsel did not make a timely, specific KRE 703(b) objection and request for findings/admonition when the records were offered, the Court moved to a palpable-error analysis and centered prejudice/impact on the verdict rather than strict procedural compliance.
  4. Expert exclusion is framed as fairness in discovery and trial integrity: RCr 7.24(3)(a) is enforced to prevent surprise that would impair cross-examination. The diagnosis shift was treated as material (not a mere typo) because the expert conceded schizophrenia and schizoaffective disorder are distinct DSM-5 diagnoses.
  5. The Court polices the evidentiary “source” problem for insanity evidence: absent defendant testimony or independent corroboration near the time of the offense, the hallucination narrative could not enter primarily via the expert without running into the Padgett/Talbott bootstrapping concern.
  6. Instruction doctrine is tethered to rational-juror plausibility: the Court used the physical evidence (U-turn, acceleration, collision sound, body thrown) to find reckless-homicide failure-to-perceive-risk implausible, especially given that the jury rejected lesser mens rea instructions already given.

C. Impact

Even as an unpublished opinion, Miller signals several practical lessons likely to influence trial practice:

  • Defense strategy with KCPC witnesses: calling a KCPC competency evaluator as a defense witness can invite broad cross-examination on criminal responsibility when insanity is at issue; Conley will not necessarily function as a shield in that posture.
  • KRE 703 litigation will turn on timing: the majority’s palpable-error analysis illustrates how failure to make contemporaneous, specific objections can convert a potentially serious evidentiary problem into an uphill appellate claim.
  • Expert disclosure must match trial testimony: diagnosis labels and the conceptual scope of an expert’s opinion must remain consistent with the disclosed report, or the defense risks exclusion under RCr 7.24(3)(a)—especially where the change affects the Commonwealth’s ability to prepare a targeted cross-examination.
  • Limits on expert-mediated narratives: the Court’s reliance on Padgett/Talbott reinforces a recurring constraint: experts cannot be used as conduits for a defendant’s otherwise untested story to establish a mental-state defense.
  • Recklessness instructions in intentional-acts fact patterns: where the conduct is inherently lethal (gunfire at close range; accelerating a car into a pedestrian), courts may view “failure to perceive risk” as categorically implausible under Hasch.

Justice Thompson’s concurrence, while agreeing on outcome, adds a cautionary counterweight: trial courts should not treat KRE 703 as a shortcut for wholesale admission of records (medical, school, hospital) without foundation, privilege review, parsing hearsay-within-hearsay, and explicit KRE 703(b) findings. That warning may influence trial judges even if the majority found no palpable prejudice here.

IV. Complex Concepts Simplified

  • “Conley walling off”: a procedural separation to prevent the same KCPC evaluator (or their work) from effectively becoming the prosecution’s rebuttal tool after initially serving a court-ordered role—especially when Ake-funded defense expertise is later provided.
  • Competency vs. insanity: competency asks whether the defendant can understand the proceedings and assist counsel now; insanity asks whether, at the time of the act, the defendant lacked substantial capacity to appreciate criminality or conform conduct to law (KRS 504.020).
  • KRE 703 “basis evidence”: experts may rely on inadmissible information; but the jury should hear that information only under narrow conditions (KRE 703(b)), usually with a limiting admonition, because otherwise hearsay can slip in under the guise of “expert basis.”
  • “Bootstrapping” through an expert: using an expert as a conduit to get the defendant’s story before the jury when the defendant does not testify, preventing cross-examination of the key factual claims.
  • “Straight” reckless homicide: not intending death, and not even perceiving the lethal risk—when the failure to perceive is a gross deviation from reasonable care (KRS 507.050(1); KRS 501.020(4)).

V. Conclusion

The Court’s affirmance rests on three interlocking ideas: (1) Conley prevents the Commonwealth from converting a KCPC court-agent evaluator into its own rebuttal weapon, but does not bar wide-open cross-examination of that evaluator when the defense calls the witness to support insanity; (2) KRE 703 objections and requested safeguards must be timely and specific to avoid the steep palpable-error standard; and (3) expert mental-health testimony must be disclosed accurately and cannot function primarily as a vehicle for the defendant’s untested, out-of-court narrative. Finally, the Court’s refusal to require a reckless-homicide instruction underscores Kentucky’s skepticism toward “failure to perceive risk” theories in inherently lethal intentional-act fact patterns.