Qualification of New Evidence Necessitates a High Level of Scrutiny in Postconviction Cases
In Gudinas v. State, 412 So. 3d 701 (Fla. 2025), the Supreme Court of Florida affirmed the Circuit Court, 9th Judicial Circuit, Orange County ruling that Thomas Lee Gudinas was summarily denied the motion for relief and demand for public records. The court held that the state’s conformity clause in Article 1, Section 17 of the Florida Constitution (2002) is constitutional and binding. This meant Florida’s prohibition against cruel and unusual punishment cannot be interpreted to provide more protection than the Eighth Amendment interpretation by the U.S. Supreme Court. Further, Florida courts are barred from exempting individuals with mental illness (falling short of intellectual disability) from the death penalty because the U.S. Supreme Court has not exempted such individuals.
Facts of the Case
On May 24, 1994, Mr. Gudinas sexually battered and murdered Michelle McGrath in Orlando, Florida. Mr. Gudinas admitted to his roommates that he killed and then sexually abused the victim. Earlier that night, he also attempted burglary and sexual battery against another woman.
On May 4, 1995, a jury convicted Mr. Gudinas of first-degree murder, two counts of sexual battery, attempted sexual battery, and attempted burglary with assault. During the penalty phase proceedings in May 1995, the state raised Mr. Gudinas’s prior felony convictions, whereas family members testified on his behalf regarding childhood behavioral problems, substance use, and abuse by his father. Dr. James Upson, a clinical neuropsychologist, testified that Mr. Gudinas was emotionally disturbed, stating he was “quite pathological in his psychological dysfunction” (and that he had an intelligence quotient (IQ) of 85 (Gudinas v. State, 693 So.2d 953 (Fla. 1997), p 960). He further added that the murder was consistent with the behavior of a person with that psychological profile. Dr. James O’Brian, a physician and pharmacologist, testified that Mr. Gudinas was unable to control his impulses during the offense. On June 16, 1995, the jury recommended the death sentence, which the trial court imposed.
On April 10, 1997, the Florida Supreme Court affirmed Mr. Gudinas’s convictions and sentence. On October 20, 1997, the U.S. Supreme Court denied certiorari. Over the following decades, Mr. Gudinas continued to pursue postconviction relief at the state and federal levels.
On May 23, 2025, Governor Ron DeSantis signed a death warrant scheduling Mr. Gudinas’s execution for June 24, 2025. Mr. Gudinas then filed a third successive motion for postconviction relief under the Florida Rule of Criminal Procedure 3.851 (2005), asserting newly discovered evidence of a “brain impairment.” Mr. Gudinas argued that his lifelong mental illnesses and his age of 20 at the time of the offense should have placed him outside the class of individuals eligible for execution, citing developmental and neuroscience literature describing immaturity, diminished responsibility, and increased susceptibility to negative influences.
Mr. Gudinas further argued that Florida’s conformity clause is unconstitutional, as it requires Florida courts to interpret the state’s prohibition on cruel and unusual punishment in conformity with the U.S. Supreme Court’s Eighth Amendment. He argued that the conformity requirement violated the Fourteenth Amendment right to due process, Eighth Amendment right to true merit-based evaluation of his claims, and Sixth Amendment right to counsel. Finally, he filed a demand for public records under Florida Rule 3.852 (2014) for postconviction relief. The circuit court summarily denied all claims made by Mr. Gudinas and his records request, leading to an additional appeal.
Ruling and Reasoning
The Florida Supreme Court reviewed the 9th Judicial Circuit Court’s summary denial of Mr. Gudinas’s third successive motion for postconviction relief and affirmed the denial of his appeal. They had previously denied his claim that his lifelong mental illness placed him outside the class of individuals who should be put to death. Mr. Gudinas appealed the decision by presenting a neuropsychiatric evaluation conducted by Dr. Hyman Eisenstein, framed as “newly discovered” evidence of “brain impairment.” The court ruled that the testimony was insufficient because it was neither new, credible, nor material. Moreover, they determined that the protections of Roper v. Simmons, 543 U.S. 551 (2005), and Atkins v. Virginia, 536 U.S. 304 (2002), did not apply to Mr. Gudinas, citing numerous cases in which similar attempts to broaden these protections were also rejected.
The court addressed whether the expert testimony presented constituted “newly discovered” evidence of brain impairment and whether these findings were sufficient to warrant modification of the sentence. The court emphasized that the “new evidence” submitted by the defense was redundant with evidence presented by other experts, namely Dr. Upson at the postconviction proceeding in 1995 and both Dr. Lipman and Dr. Upson at the postsentencing stage in 1999. The court described the findings as “general and conclusory,” stressing the report was simply a restatement of earlier findings followed by “a single conclusory statement” about brain impairment and frontal lobe dysfunction. Moreover, they perceived the evidence had already been accepted and considered at those earlier stages; therefore, this “new” information would not be expected to produce a different ruling.
The court considered whether the protections of Atkins should extend to Mr. Gudinas. They affirmed the Eighth Circuit ruling that these protections do not extend to Mr. Gudinas, citing prior cases in which claims were made that the protections should extend to individuals with related forms of impairment, including neurocognitive disorder, mental illness, and neurological impairments. They reiterated that “the categorical bar of Atkins that shields the intellectually disabled from execution does not apply to individuals with other forms of mental illness or brain damage” (Gudinas, p 712).
Finally, the court considered whether the protections of Roper should be extended to Mr. Gudinas. The court addressed Mr. Gudina’s specific argument that the protections of Roper, which he claimed were intended to protect individuals who are not yet fully mature, should extend to him. Again, the court affirmed the 9th Judicial Circuit Court’s ruling that this protection does not extend to Mr. Gudinas, citing prior case law. In these cases, the court repeatedly held that protections for chronological age under 18 should not extend to defendants with a “mental and developmental age,” “mental age,” and “mental and emotional age” under 18. Although the claim argued that he was “mentally ill or developmentally” under 18 at the time of the offense, he was at a chronological age of 20. Therefore, the court reiterated that the population is defined by chronological age and that arguments based on estimated brain maturity are insufficient to challenge the ruling.
Discussion
In Gudinas, the court applied a two-prong analysis of the new evidence submitted: whether the evidence was unknown at the time of trial and could not have been discovered during the due diligence process; and whether the evidence would probably produce a lesser sentence during retrial. According to the first prong, unknown and undiscoverable evidence would only apply in limited circumstances, such as newly discovered or amended scientific research. Even if the first prong was met, the second prong would be even more difficult to achieve unless the new evidence was sufficient to produce a lesser sentence. The court determined Mr. Gudinas’s claim met neither prong, highlighting the scrutiny utilized when submitting new evidence.
Ultimately, the case underscored the heightened scrutiny of “new evidence” presented to challenge prior rulings, specifically in successive postconviction claims. Courts may treat updated evaluations as reinterpretations rather than new evidence. As neuroscience continues to advance, emerging technologies could yield new findings that challenge the death penalty in ways not yet possible with current methods. The expert witness will be expected to convey findings clearly and substantiate claims appropriately, emphasizing the importance of clear and credible evidence for the success of future claims.
- © 2026 American Academy of Psychiatry and the Law





