The duty to disclose evidence favorable to the defense

The duty to disclose evidence favorable to the defense is the prosecution’s obligation to turn over information that could help show a defendant’s innocence or weaken the credibility of a state witness. In Walter McMillian’s case, the obligation had concrete stakes: records of payments and favors to Bill Hooks, and Ralph Myers’s earlier statements resisting pressure to implicate McMillian, could have changed how the jury assessed the state’s case. Their nondisclosure left the defense arguing against a version of events that the state’s own evidence contradicted.

What the Duty Requires

The duty reaches beyond evidence that directly proves a defendant did not commit a crime. It also covers information useful for impeaching a witness—facts that might lead a jury to doubt the witness’s reliability, motives, or relationship with the authorities. As Bryan Stevenson explained in court, the United States Supreme Court had long required prosecutors to disclose exculpatory evidence and material that could assist the defense in challenging a witness. The obligation therefore concerns not only what the state plans to present, but also what it knows that could help the other side test that presentation.

Disclosure matters because a defense cannot make effective use of evidence it does not know exists. A witness may appear independent until records reveal payments or favorable treatment; an accusation may seem consistent until earlier statements show the witness denying knowledge of the crime. In the McMillian case, both kinds of information were available only after investigators and lawyers dug into records and testimony that had not been provided to the trial defense.

Evidence Behind the McMillian Prosecution

The investigation uncovered county financial records showing that Sheriff Tate had paid Hooks nearly $5,000 in reward money and expenses for testimony against McMillian. The records also showed payments for Hooks to travel in and out of the county around the time of trial. Those facts could have given the defense grounds to question whether Hooks’s testimony was independent or connected to benefits from law enforcement. The book states that this information should have been disclosed before trial so McMillian’s lawyers could use it to challenge Hooks’s credibility.

The favorable treatment extended beyond payments. Hooks was released from jail immediately after telling police that he had seen McMillian’s low-rider truck at the cleaners on the day of the murder. Court records showed that the district attorney and sheriff had also obtained the dismissal of city charges and fines against Hooks, although they had no authority in city court to do so. Because dismissal of charges in exchange for cooperation was information the state had to reveal under Supreme Court precedent, the failure to disclose it kept the defense from presenting an important reason to scrutinize Hooks’s account.

Other evidence gathered by the later defense helped expose weaknesses in the prosecution’s story, though it should not be confused with proof that every such fact was withheld by the state. A store owner recalled that Myers had to ask which man in the store was McMillian, indicating that Myers had not previously known him. A flyer confirmed a fish fry at McMillian’s home on the day of Ronda Morrison’s murder, and a mechanic confirmed that the truck’s low-rider modifications were made more than six months after the crime. Together with testimony that church members and relatives were at the house, and that McMillian’s truck had been dismantled for transmission work, these details supplied a substantial alibi and challenged the descriptions of the truck. They also show why disclosure and investigation are related but distinct: the defense needs access to the state’s favorable information, and it may still have to pursue other witnesses and records independently.

Myers’s Statements and the Hearing

At McMillian’s post-conviction hearing, Stevenson asked Myers whether his trial testimony had been true. Myers answered that it had not. The recantation mattered, but the defense also presented evidence that Myers had disputed the accusation before trial. Staff at Taylor Hardin Secure Medical Facility and other doctors had recorded accounts in which Myers said that he had not committed the crime and was being pressured by local authorities to confess or testify as they wanted. The defense emphasized that these statements predated the trial and appeared in medical records that had never been given to McMillian’s trial lawyers.

The hearing’s final evidence made the gap in disclosure especially stark. Recordings made during Myers’s interrogations showed him repeatedly saying that he knew nothing about the Morrison murder or McMillian. They also captured officers threatening him and Myers resisting efforts to frame an innocent man. The recordings contradicted his trial testimony and supported his recantation. They further showed that Myers had made at least six additional statements to police, beyond the two statements the prosecution had represented as the full record. Typed versions of the exculpatory statements were favorable to McMillian, yet had not been disclosed to his attorneys.

The defense called McMillian’s original lawyers, Bruce Boynton and J. L. Chestnut, to explain what they could have done differently had the suppressed evidence been available. The state offered no rebuttal after the defense presented its case. That silence did not itself resolve the legal claims, but it left the court with a record showing how undisclosed material had concealed both the pressure behind Myers’s accusation and the benefits connected to Hooks’s testimony.

Disclosure, Power, and the Limits of the Record

The duty operates within a larger contest over whose account is treated as evidence. Black residents had told Sheriff Tate that he had arrested the wrong man, while Tate had not investigated McMillian’s life, background, or whereabouts on the day of the murder before accepting Myers’s accusation. At trial, the prosecution’s witnesses and narrative carried institutional authority; the information later assembled by the defense exposed how much that authority had obscured. When Tom Chapman, who was defending the conviction, dismissed community members’ views as uninformed and insisted that his job was to defend the judgment, Stevenson saw the case as an instance in which the system had become committed to its own account rather than responsive to evidence challenging it.

The distinction between nondisclosure and other evidentiary failures is important. In the prosecution of Marsha Colbey, for example, Kathleen Enstice initially claimed that a baby had been born alive before she had examined the body, later conceding that she had no basis for that early opinion. At trial, the state’s own experts challenged her conclusions. Those facts raise questions about the production and testing of expert evidence, but they are not, by themselves, the same as proof that favorable evidence was withheld from the defense. Similarly, Anthony Ray Hinton’s case involved a state firearms conclusion that his defense, limited to $500 for an expert, was poorly equipped to challenge; the available account emphasizes the inequality in resources and the mistaken forensic conclusion, not a specific disclosure violation.

In McMillian’s case, by contrast, the records and recordings make the disclosure failure explicit: favorable material existed, the prosecution was obligated to provide it, and the trial lawyers did not receive it. The duty is therefore not a procedural nicety detached from the search for truth. It is a safeguard against allowing the state to present a witness’s accusation while concealing information that could change how the accusation is understood. When that safeguard fails, a conviction can appear solid only because the defense has been denied the evidence needed to test it.