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VC-015 Wrongful conviction · Illinois 1999

Anthony Porter — two days from execution, freed by journalism students

mistaken-eyewitnessrecanted-testimonyexoneratedreleased1990s-2000s
Years lost
~16 years on death row
Charge
Double murder (1982)
Cleared
Charges dismissed, March 1999
Status
Exonerated

Summary

In Chicago in August 1982, Anthony Porter was convicted of the double murder of Marilyn Green and Jerry Hillard, shot to death in Washington Park on the city's South Side, and was sentenced to death; he was exonerated in 1999 after a Northwestern University investigation and the recantation of the sole eyewitness against him established that the case could not stand. Porter, who is Black and who tested with an IQ of 51, spent roughly sixteen years on Illinois's death row for a crime the state ultimately conceded it could not prove he committed.

The outcome is settled, and so is the detail that defines the case: Porter came within roughly two days — about fifty hours — of being executed. In September 1998 the Illinois Supreme Court stayed his execution, not on the question of his guilt but on whether his cognitive disability left him competent to be put to death. That stay bought time. During it, journalism professor David Protess, his Northwestern students, and private investigator Paul Ciolino reinvestigated the case, found that the prosecution's only eyewitness could not have seen what he claimed, and obtained that witness's recantation. On February 5, 1999, Porter walked out of Cook County Jail; the charges were formally dismissed the following month.

No physical evidence had ever tied Porter to the killings. The conviction rested on the testimony of William Taylor, who told police he saw Porter shoot the victims — an account Taylor later swore had been pressured out of him, and that the investigation showed was physically impossible. The case is now studied as the clearest illustration of how thin a capital conviction can be.

This dossier centers Anthony Porter as the wronged party. The mechanism of the wrong was a coerced eyewitness, a near-total absence of physical proof, and a capital process that came within hours of making the error permanent. The case's later complications — including a separate man's confession that was itself contested and eventually set aside in 2014 — are recorded soberly below; none of them restored Porter's conviction, which the courts had erased.

Timeline

August 15, 1982.
Around 1 a.m., Marilyn Green, 19, and Jerry Hillard, 18, are shot to death near a swimming pool in Washington Park on Chicago's South Side.
1982 — the case against Porter.
Anthony Porter, known to police in the area, is arrested. The prosecution's central witness, William Taylor, tells investigators he saw Porter fire the shots. No physical evidence links Porter to the crime.
1983 — conviction and death sentence.
Porter is convicted of the double murder and sentenced to death, largely on Taylor's eyewitness testimony.
1986–1987 — appeals fail.
The Illinois Supreme Court affirms the conviction in 1986; the U.S. Supreme Court declines review in 1987. Porter remains on death row.
1995 — IQ measured at 51.
Testing during post-conviction proceedings records Porter's IQ at 51, raising the question of whether he is competent to be executed.
September 1998 — two days from death.
With Porter's execution scheduled, the Illinois Supreme Court grants a stay roughly fifty hours beforehand to examine his competency. The reprieve is procedural, but it creates the opening that follows.
Late 1998 — the reinvestigation.
David Protess assigns the case to his Northwestern journalism students; with investigator Paul Ciolino, they re-examine the scene and the witnesses while the competency question is pending.
December 1998 — Taylor recants.
William Taylor recants to Ciolino and a student, signing an affidavit that police had pressured him to name Porter; the investigation shows his claimed sightline was obstructed.
February 3, 1999 — a confession.
Another man, Alstory Simon, gives a videotaped statement admitting to the shootings. The development accelerates Porter's release.
February 5, 1999 — Porter freed.
After roughly sixteen years on death row, Anthony Porter is released from Cook County Jail on bond.
March 1999 — charges dismissed.
Prosecutors drop the case; Porter's conviction is formally vacated. He is the eleventh person released from Illinois's death row on innocence grounds since executions resumed in 1977.
2000–2011 — the policy ripple.
Citing Porter's case among others, Governor George Ryan declares a moratorium on executions in 2000 and commutes all death sentences in 2003; Illinois abolishes the death penalty in 2011.

The Weight on One Witness

The capital case against Anthony Porter was, in the end, one man's word. There was no forensic tie — no fingerprint, no recovered weapon matched to Porter, no biological evidence placing him at the killings. What sent him to death row was the testimony of William Taylor, who told police and a jury that he had watched Porter shoot Marilyn Green and Jerry Hillard near the Washington Park pool in the small hours of an August morning.

A single eyewitness can be enough to convict, and here it was enough to condemn. But the account was load-bearing in a way that left no margin for being wrong. If Taylor was mistaken, or coerced, or simply not where he said he was, the entire structure collapsed — because there was nothing underneath it. A man's life came to rest on whether one witness's story would hold.

It would not. The reinvestigation established that Taylor's claimed vantage point did not afford the view he had described; the line of sight to the shootings was obstructed. And Taylor himself, confronted, recanted — swearing in a December 1998 affidavit that Chicago police had pressured and intimidated him into naming Porter. The account that had outweighed the absence of all physical evidence turned out to be the product of pressure, not observation. That a death sentence could be built on so little, and stand for sixteen years, is the case's first lesson.

Fifty Hours

The detail that makes Porter's case impossible to file away is how close the error came to being final. By September 1998 his appeals were exhausted and his execution was set; the state of Illinois was, in the most literal sense, preparing to kill him. The stay that intervened arrived roughly fifty hours beforehand — and not because anyone had concluded he was innocent. It came because his measured IQ of 51 raised a separate question: whether a person with that degree of cognitive disability could lawfully be executed at all.

That distinction matters to understanding how wrongful executions happen. The system was not, at that moment, asking whether Porter had done it; it considered that question closed. It was asking a narrow procedural question about competency. Had that question not existed — had Porter's IQ been unremarkable — the stay might never have issued, and the execution would have proceeded on a conviction about to dissolve. His life was saved, in the first instance, by an accident of which legal question happened to be open.

The reprieve created a window, and the reinvestigation filled it. In the weeks the competency review bought, Protess's students and Paul Ciolino did the work the original case had not: they tested Taylor's sightline, secured his recantation, and pressed the case open. An execution halted by fifty hours, an exoneration assembled in the reprieve that followed — that proximity is what gives the Porter case its enduring force. It is the documented instance in which a state came within two days of executing a man whose conviction then fell apart.

The Investigation That Should Not Have Been Necessary

The work that freed Anthony Porter was done by undergraduates and a private investigator, not by the institutions that had convicted him. David Protess, a professor at Northwestern's Medill School of Journalism, assigned the case to his investigative-reporting students; with Paul Ciolino, they re-walked the scene, re-interviewed witnesses, and found what the original investigation had either missed or ignored — that the only eyewitness could not have seen the crime and now disavowed his testimony.

That a journalism class and a private investigator, rather than the courts or the police, caught the error is itself the indictment. Porter had appealed; the Illinois Supreme Court had affirmed; the U.S. Supreme Court had declined to intervene. Every internal mechanism the system offers had run, and each had left the conviction in place. The correction came from outside, only because outsiders chose to look — and because a competency stay had, by chance, left enough time for them to find anything.

The investigation also drew a videotaped confession from another man, Alstory Simon, on February 3, 1999, which hastened Porter's release two days later. That confession would in later years become contested — Simon recanted it and was himself released in 2014 amid questions about how it had been obtained, as set out below. What those developments did not do was restore Porter's conviction: the case against him had already failed on its own terms, on the collapse of the only evidence that had ever supported it.

The Five Factors

01
A capital conviction resting on a single eyewitness
Porter was sentenced to death on the word of one witness, with no physical evidence beneath it. Single-eyewitness cases carry no redundancy: if the witness is wrong or coerced, nothing remains. Staking a life on testimony that cannot be cross-checked against forensic proof builds a death sentence with no margin for human error.
02
Coerced and physically impossible testimony
The lone witness later swore police had pressured him to name Porter, and investigation showed his claimed sightline was obstructed. Eyewitness accounts shaped by police pressure, and never tested against the physical geometry of the scene, can convict the innocent while sounding authoritative. Testimony must be checked against what the witness could actually have seen.
03
Cognitive disability as both vulnerability and afterthought
Porter's IQ of 51 made him more vulnerable to a flawed prosecution, yet his disability surfaced in the courts only as a late competency question, not as a reason to scrutinize the conviction itself. Systems that notice a defendant's disability only at the threshold of execution have failed him at every prior stage.
04
The irreversibility of the death penalty
Porter survived by roughly fifty hours, and only because an unrelated legal question paused the execution. Capital punishment's defining feature is that its errors cannot be undone; a system that produces wrongful convictions will, given a death penalty, eventually carry one out. The narrowness of Porter's escape is the argument in miniature.
05
Correction required outside investigators
The exoneration came from a journalism professor, his students, and a private investigator, after every court had affirmed the conviction. A justice process whose mistakes are caught only when undergraduates happen to take up the case has no dependable way to find its own errors — so the great majority are never found, and some end at the execution chamber.

Aftermath

Anthony Porter walked out of Cook County Jail on February 5, 1999, and the charges were dismissed the following month. He had spent roughly sixteen years on death row, much of it under an active death sentence, for a double murder the state could no longer maintain he had committed. Illinois later paid him modest statutory compensation. He died in 2021 at the age of 66.

The case's largest consequence was political. Porter's near-execution and exoneration — one of a series of Illinois death-row reversals — became central to Governor George Ryan's conclusion that the state's capital system was, in his words, fraught with error. Ryan declared a moratorium on executions in January 2000, and in January 2003, days before leaving office, commuted every sentence on Illinois's death row; the state abolished the death penalty in 2011. The image of a man two days from execution, freed by students, did work that statistics alone could not.

The record carries a sober complication. Alstory Simon, the man whose 1999 videotaped confession helped speed Porter's release, later recanted, contending the confession had been improperly obtained through the methods of the reinvestigation. In 2014, after a review by the Cook County State's Attorney, Simon's own conviction was vacated and he was released. That development reopened debate about the conduct of the investigation and was never reconciled to a clean account of who killed Marilyn Green and Jerry Hillard. It did not, however, reinstate the case against Anthony Porter, whose conviction had collapsed on the failure of its own sole witness; in the eyes of the courts he remained a man wrongly convicted and freed.

Lessons

  1. Do not impose death on the strength of a single eyewitness with no physical evidence beneath it; the account has no backup if it fails.
  2. Test eyewitness testimony against the physical scene — sightlines, distances, lighting — before it is allowed to convict, let alone condemn.
  3. Treat a defendant's cognitive disability as a reason to scrutinize the whole case, not merely as a late question about competency to be executed.
  4. Recognize that the death penalty makes error irreversible: Porter survived by about fifty hours and only by procedural chance.
  5. Build genuine internal review for capital convictions, so that catching a fatal mistake does not depend on outside investigators choosing to look.

References