Skip to main content

Richard Eugene Glossip v. Oklahoma

Updated Sep 5, 2026

In brief

Glossip's conviction was set aside because the Court found a due process violation involving information about a key witness.

Where it stands
Decided

Decided 6-2 · February 25, 2025 · Opinion by Justice Sotomayor

What it’s about
This case involves a death row inmate seeking to overturn his conviction based on new evidence that prosecutors suppressed information about a key witness's mental health and potential recantation.
Who it affects
The decision means Glossip cannot remain convicted on the prior case without a new trial. It also reinforces prosecutors' duty to disclose important evidence that could affect a witness's credibility.

Summary: written with AI from the case record.

Illustration for Richard Eugene Glossip, Petitioner v. Oklahoma
Conceptual illustration · AI-generated

What it's about

The Court considered whether the state's failure to disclose this evidence violated the defendant's due process rights.

The case concerns whether a death row inmate received a fair trial when prosecutors did not disclose evidence about a key witness's mental health and possible recantation.

Question presented

Whether the state's failure to disclose this evidence violated the defendant's due process rights.

What the Court decided

Holding

1. This Court has jurisdiction to review the OCCA’s judgment. The independent and adequate state ground doctrine precludes the Court from considering a federal question if the state court’s decision rests on an independent and adequate state law ground. OCCA’s application of the PCPA was not such a ground, because the OCCA’s decision to apply the PCPA depended on its antecedent rejection of the attorney Cite as: 604 U. S. ____ (2025) 3 Syllabus general’s confession of a Napue error, which was based solely on federal law. The OCCA held that the confession could not overcome the PCPA’s limitations because it lacked a basis in law or fact, specifically finding no Napue error. 529 P. 3d 218, reversed and remanded.

Result
Reversed

The vote

  • Joined the judgment
  • Concurred in a separate opinion
  • Dissented
  • Wrote an opinion
Majority · 5joined the Court's opinion
  1. Sotomayorwrote the opinion
  2. Roberts
  3. Kagan
  4. Kavanaugh
  5. Jackson
Concurring · 1agreed with the result, wrote separately
  1. Barrettwrote separately
Dissenting · 2disagreed with the result
  1. Thomaswrote the dissent
  2. Alito
6 justices joined the judgment (1 writing separately), 2 dissented.

From the opinions

“Instead, the Court stretches the law at every turn to rule in his favor.”

— Justice Clarence Thomas(dissent)

What's next

The case returns to Oklahoma for further proceedings, including a new trial rather than enforcement of the prior conviction. Oklahoma prosecutors must decide how to proceed with the case under the Court's ruling.

Documents

6

Docket activity

19
  • New analysis added

    Sep 5, 2026 · Court records

  • AI analysis generated: Impact Analysis

    Sep 5, 2026 · Generated

  • AI analysis generated: Opinion Summary

    Sep 5, 2026 · Generated

  • New analysis added

    Sep 5, 2026 · Court records

  • AI analysis generated: Case Briefing

    Sep 5, 2026 · Generated

Show 7 more
  • AI analysis generated: Decision Record

    Sep 5, 2026 · Generated

  • Status changed from unknown to unknown

    Mar 31, 2025 · supremecourt.gov

  • Status changed from unknown to unknown

    Feb 25, 2025 · supremecourt.gov

  • Opinion added: opinion

    Feb 25, 2025 · Court records

  • Opinion added: Glossip

    Feb 25, 2025 · Court records

  • Audio Recording added: Oral Arguments - Glossip

    Oct 9, 2024 · Court records

  • Status changed from unknown to unknown

    Oct 9, 2024 · supremecourt.gov

Older entries are on the full docket.

More questions

5
What did the Supreme Court rule in Glossip v. Oklahoma?
The Court ruled that undisclosed evidence concerning a key witness violated Glossip's due process rights. It reversed the Oklahoma criminal appeals court and set aside his conviction.
Who won Glossip v. Oklahoma?
Richard Glossip won in the Supreme Court. The Court ruled 6-2 and ordered proceedings that set aside his prior conviction.
How does Glossip v. Oklahoma affect death row inmates?
It shows that a conviction may be challenged when prosecutors fail to disclose important evidence affecting a key witness. Glossip's prior conviction cannot stand without a new trial.
What happens next in Glossip v. Oklahoma?
The case goes back to Oklahoma for further proceedings. Prosecutors must determine whether and how to try Glossip again.
Is the duty to disclose important witness evidence still the law after Glossip v. Oklahoma?
Yes. The Court applied due process protections to undisclosed evidence about a key witness's mental health and potential recantation.

Sources

Primary materials plus reporting. Best-effort analysis: this explainer relies on a mix of primary materials and trusted secondary sources. Official filings and opinions remain authoritative.

Checked Sep 5, 2026Methodology

Court records and filings

Reporting and analysis