DPI Database: Innocence Database
A Death Penalty Information Center database of every death-row exoneration since 1972. For every 8 people executed in the United States, one other person has been exonerated from death row.
DPI Analysis: What Lies Behind Wrongful Convictions
The Most Common Causes of Wrongful Death Penalty Convictions: Official Misconduct and Perjury or False Accusation
Overview
Given the fallibility of human judgment, there has always been the danger that an execution could result in the killing of an innocent person. Nevertheless, when the U.S. Supreme Court held the administration of the death penalty to be unconstitutional in 1972, there was barely any mention of the issue of innocence in the nine opinions issued. Although mistakes were surely made in the past, the assumption prevailed that such cases were few and far between. Almost everyone on death row was surely guilty.
However, as federal courts began to more thoroughly review whether state criminal defendants were afforded their guaranteed rights to due process, errors and official misconduct began to regularly appear, requiring retrials. When defendants were now afforded more experienced counsel, with fairly selected juries, and were granted access to scientific testing, some were acquitted and released. Since 1973, 202 former death-row prisoners have been exonerated of all charges related to the wrongful convictions that had put them on death row.
At Issue
It is now clear that innocent defendants will be convicted and sentenced to death with some regularity as long as the death penalty exists. It is unlikely that the appeals process — which is mainly focused on legal errors and not on factual determinations — will catch all the mistakes. Reforms have been begrudgingly implemented, increasing both the costs and the time that the death penalty consumes, but have not been sufficient to overcome human error. The popularity and use of capital punishment have rapidly declined as the innocence issue has gained attention. The remaining question is how many innocent lives are worth sacrificing to preserve this punishment.
What DPI Offers
DPI has led the way in highlighting the issue of innocence. Its list of exonerated individuals is presented in a searchable database, with links to more complete descriptions of each case. DPI has issued a series of reports on this issue, collecting the latest information on why so many mistakes occur. It also follows the related questions of whether innocent individuals have already been executed and whether some defendants are in fact innocent, despite not being completely exonerated in the eyes of the law.
News & Developments
News
Oct 06, 2026
Justin Wolfe, Former Virginia Death Row Prisoner, Released on Plea Deal After Federal Court Found Significant Prosecutorial Misconduct
Justin Wolfe (pictured, center, with his mother and uncle) was released from prison on September 28, 2026 after pleading guilty to marijuana distribution and entering an Alford plea on charges of solicitation of robbery. He had been sentenced to death nearly 25 years ago for the murder-for-hire of Daniel Petrole, Jr., his marijuana supplier. Owen Barber IV, who admitted to shooting Mr. Petrole, had implicated Mr. Wolfe in order to avoid a death sentence himself. Mr. Barber later recanted his…
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Sep 28, 2026
Texas Court of Criminal Appeals Refuses to Grant Relief to Melissa Lucio, Despite Trial Court’s Finding of Actual Innocence
Nearly two years after District Judge Arturo Nelson declared Texas death-sentenced prisoner Melissa Lucio “actually innocent,” the Texas Court of Criminal Appeals (TCCA) refused to accept the recommendation of the lower court to overturn her conviction. A closely divided TCCA declined “to adopt any of the habeas court’s findings and conclusions,” which the majority of the court wrote “exclusively reflect [Ms. Lucio’s] interpretation of the evidence and are often unsupported.” In its 5 – 4…
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Sep 21, 2026
Former Portage County Sheriff Says Tyrone Noling is Innocent and Should Be Pardoned, Citing ‘Egregious’ Official Misconduct
In a September 17, 2026 op-ed, P. Ken Howe — who served as sheriff of Portage County, Ohio from 1989 to 1993 and was present at the crime scene — called on Governor Mike DeWine to grant a full pardon to Tyrone Noling, who has spent three decades on death row after being convicted of the 1990 murders of Cora and Bernhardt Harting. Mr. Noling has always maintained his innocence. Mr. Howe’s public request follows an August 25 decision from the Ohio Parole Board recommending that Gov. DeWine grant Mr.
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Sep 10, 2026
California Governor Candidate Xavier Becerra Vows to Extend Execution Moratorium, Despite Record Defending Death Sentences
Xavier Becerra, the Democratic front-runner in California’s 2026 gubernatorial race, has pledged to extend Governor Gavin Newsom’s moratorium on executions if elected in November. This is a marked shift from his previous record as the state’s attorney general, when his office defended capital convictions and pursued new death sentences. While in office, AG Becerra said he considered capital punishment as a legitimate option for crime victims, and during his 2017 confirmation hearing, he told…
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Sep 09, 2026
In New Filing, DNA Expert’s Recanted Testimony Further Undermines the Conviction and Death Sentence of Texas Prisoner Jeffery Prible
A forensic DNA analyst whose trial testimony helped secure the 2002 conviction and death sentence of Ronald “Jeffery” Prible has now disavowed that testimony, adding new weight to Mr. Prible’s long-standing innocence claim in a case marked by serious allegations of prosecutorial misconduct. In an August 28 declaration filed as part of continued efforts to overturn Mr. Prible’s conviction, DNA expert William Watson wrote that developments in forensic science and his own professional opinion…
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