There’s a photograph of Joe Arridy taken just days before he died. He’s holding a toy train, grinning like a schoolboy, eyes wide with wonder. You’d be forgiven for thinking it was a birthday snapshot. It wasn’t. It was taken on death row.
Joe had an IQ of 46, didn’t understand complex instructions, couldn’t read properly, and often forgot what day it was. He liked toy trains and ice cream. He liked people, even the ones leading him to the gas chamber.
In 1936, Joe Arridy was convicted of one of the most horrific crimes imaginable—rape and murder. The victim was a 15-year-old girl from Pueblo, Colorado, and public outrage was fierce—the kind that needed someone to blame, someone to punish.
Key Takeaways
- Joe Arridy, with an IQ of 46, was wrongfully convicted of rape and murder in 1936.
- Public outrage and police desperation led to Arridy’s false confession and conviction.
- Arridy’s trial was a travesty, with no physical evidence and a coerced confession.
- Despite appeals and pleas for mercy, Arridy was executed in 1939.
- In 2011, Joe Arridy was posthumously pardoned, acknowledging a grave miscarriage of justice.
Joe Arridy confessed, and everybody gave themselves a good pat on the back that such a horrific crime had been solved so quickly. Except that the confession made no sense. He couldn’t explain how the crime happened and didn’t even know where the house was. His story changed depending on who asked the questions, but it didn’t matter. The court wanted closure, and the public wanted vengeance, even if the “killer” couldn’t even tie his own shoelaces.
On January 6, 1939, Joe Arridy was strapped into a gas chamber and put to death. It remains one of the worst miscarriages of justice in U.S. history.
A Simple Man in a Complicated World
Joe Arridy was born to Syrian immigrant parents in 1915 in Pueblo, Colorado. From the start, something was different. He was slow to speak, struggled to walk, and never really kept up with other kids his age. His parents were working-class and already stretched thin, so they didn’t know what to do. Back then, there wasn’t really a name for it. You were just labelled “feeble-minded,” and that was that.
By the age of ten, Joe was sent to the—and this is actually what they called it back then—“State Home for Mental Defectives” in Grand Junction. Inside, children with intellectual disabilities were warehoused, barely monitored, and mostly ignored. Joe spent years there, not because he was violent, not because he posed any danger, but because nobody knew what else to do with him.
Joe’s world was small. He didn’t understand money, couldn’t follow steps or procedures, would laugh at things that weren’t funny, and would ask the same questions over and over. But he was kind—a simple man who smiled at everyone and never seemed to hold a grudge.
In August 1936, at the age of 21, Joe was released from the institution, supposedly rehabilitated. But there was no plan, no supervision. He was left to drift, homeless and clueless in a world that had no space or even understanding for someone like him. He eventually wandered into the town of Cheyenne, Wyoming. And that’s when everything changed.
The Crime That Needed a Culprit
That same month, August 1936, a horrific attack shook the town of Pueblo, Colorado. Two teenage sisters, Dorothy and Barbara Drain, were assaulted in their home. Dorothy, 15 years old, was raped and bludgeoned to death with what was believed to be the blunt side of a hatchet. Barbara was also attacked, but survived after spending two weeks in a coma.
The brutality of the crime sent the town into a frenzy. Panic spread. Rumours flew. The press didn’t help, and neither did the police; they simply wanted someone to blame. The problem was that there were no clear suspects or even solid leads—just a scene of horror and a community baying for blood.
By August 18, the investigation was in chaos. Five men had already been detained, and authorities were throwing anything at the wall to see what stuck. A $1,000 reward—worth over $22,000 today—was offered, which only added more noise to an already frantic search.
Eyewitnesses had described the suspect as “swarthy,” which isn’t a term you hear much these days, but it translates to dark complexion, as in olive-skinned or tanned, not necessarily black. The police leaned hard into that vague, racially loaded term and started rounding up African-American men with prior records, but then shifted focus to Joseph Qualteri, an escaped patient from the Colorado State Hospital, who was of Italian descent.
Qualteri was eventually tracked down and killed by police near Englewood, but his fingerprints didn’t match. Neither did anyone else they’d pulled in. The real suspect was still out there, and the manhunt was getting more desperate by the hour.
Enter Joe Arridy
Joe Arridy wasn’t even in the same city when the murder happened. He was hundreds of miles away, but none of that mattered—what mattered was that he was an easy target. Arridy was picked up in Cheyenne, Wyoming, not for murder, not even for theft—but for wandering around the rail yard, confused and alone. It later emerged that Joe had been working informally for a kitchen car that had stopped in the rail yard, but when it came time to move, he had been told he must stay behind.
He was found by two rail detectives who initially thought he might have been a deserter from Camp Logan army base south of Denver. He was taken to the local station, where Laramie County Sheriff George J. Carroll began questioning him. And it’s here where fate turned against Arridy.
To begin with, the Sheriff didn’t know what to make of him. He answered questions with a childlike innocence that made no sense to them, and he couldn’t stop smiling. But the Sheriff became very interested when he mentioned that he was from Pueblo and had recently traveled through.
Carroll questioned Arridy about any “girlfriends” he had in Pueblo, asking, “Well, Joe, you like the girls pretty well, don’t you?” and “You have had several girls during your lifetime,” both of which Arridy answered yes.
Carroll then reportedly asked, “If you like to go around with girls so much, why do you hurt them?” Arridy allegedly responded, “Well, I didn’t mean to.”
Carroll further claimed that Arridy openly confessed to the murder of “the two little girls in Pueblo” and to having done it “just for meanness,” reassuring Carroll that “if they let me alone I’ll be good after this.”
These words seem jumbled at best when you read them, especially when you consider that the man they were coming out of had a mental age of 6. Today, there is absolutely no way that something like this would stand up in court, but back in the 1930s, it was a case of the Sheriff picking up the phone and informing his colleagues in Pueblo that he had their man, then calling the press to essentially announce the end of the manhunt. But there is another character in this shambolic excuse for a police investigation.
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Frank Aguilar
By the time Joe Arridy was dragged into the spotlight, Pueblo police already had a real suspect, Frank Aguilar.
Aguilar had worked directly under the murdered girls’ father through the Works Progress Administration. That job didn’t last long, and he had been fired shortly before the killings. The police actually found him at the funeral of Dorothy Drain, loitering around the casket in his overalls, out of place and visibly agitated. Twice, he cut in line to get another look at the body, before he shoved 25 cents in nickels into the father’s hands, saying it was “to help the family.”
His bizarre actions were enough to spike interest, and he was arrested on the spot.
What they found at his home didn’t help his case. An axe head, with notches matching the wounds found on the girls, a calendar with the 15th August circled—the day after the murders—and some photos of nude women and news clippings relating to sex murders. Aguilar eventually admitted to killing Dorothy Drain and was also linked to two other brutal attacks in the same neighborhood. It seemed like the police had actually found their man, which should have been good news for Joe Arridy.
But it wasn’t to be. Sheriff Carroll had Aguilar and Arridy placed together in prison and told each that the other had confessed. He was lying. Still, when Joe saw Frank, he smiled and said, “That’s Frank.” Aguilar, initially, said he’d never seen Joe before, but days later, after nine hours of interrogation, he changed his tune. In a five-page statement, prompted entirely by leading questions, he said Joe had been his accomplice for the murders.
When asked later why he changed his story, Aguilar said they’d threatened him. Said there’d be “a dead Mexican” if he didn’t play along. But by then, the press had their narrative. Two killers. A shared night of madness. And Joe—the smiling, confused scapegoat—was now tied to a crime he couldn’t have possibly planned, understood, or committed.
The Trial
If you thought that all of that was bad, the trial—if you can even call it that—was a travesty. Joe’s defense attorney, court-appointed and outmatched, was well out of his depths. He argued that Joe’s mental state made him unfit for trial—but this was 1930s Colorado, and sympathy wasn’t on the menu. Joe was tested by doctors who couldn’t agree on much, except one thing: he didn’t understand what was happening.
Yet, remarkably, the court ruled him sane enough to stand trial because he could say his own name and count to ten. That’s how scientific things were back then.
There was no physical evidence, fingerprints, blood, or eyewitnesses. Just a confession extracted under pressure, riddled with contradictions and details that changed every time Joe told the story. It was one of the flimsiest prosecution cases you will ever see. The prosecution painted Joe as a monster, not a confused young man, but a cunning killer, which surely must have seemed strange when looking into Joe Arridy’s bemused and confused eyes.
The all-white, male jury listened for just over an hour before returning a verdict.
Guilty.
And just like that, Joe Arridy—who didn’t know what “guilty” meant—was sentenced to die in the gas chamber. A six-year-old in a man’s body, handed the most adult punishment imaginable.
Appeal & Execution
Joe did have one person in his corner, an attorney named Gail Ireland, who stepped in to fight his conviction. Ireland wasn’t some career do-gooder and would later become Colorado’s Attorney General and Water Commissioner, but in 1937, he took on Arridy’s case for free, simply because he believed it was the right thing to do.
Ireland fought tooth and nail. He didn’t buy the confession or the sham of a trial and certainly didn’t buy the idea that a man with the mind of a six-year-old should enter a gas chamber. He stalled the execution nine times, but in the end, he couldn’t stop the machine. The state refused to back down, and even a rapidly growing public petition couldn’t sway Teller Ammons, the Governor of Colorado. He wanted a conviction to stick, and if that meant killing someone who didn’t understand death, so be it.
Aguilar had since been executed and confessed to acting alone, while medical experts lined up to say Joe didn’t grasp what was happening. He didn’t fully understand what he had been charged with or convicted of, and wasn’t able to comprehend that he had been given a death sentence.
Even warden Roy Best, the very man charged with executing Joe, pleaded for mercy, and just about every prison guard, hardened by years of death row routine, said Joe didn’t belong there. He was polite, cheerful, always smiling—unaware of the dark future creeping closer. But political optics outweighed morality, and the state pushed on.
The execution was set for January 6, 1939. A last-ditch stay of execution that afternoon failed, and the system of death gathered speed. When asked what he would like for his final meal, Arridy replied ice cream, which Warden Best supplemented with a cigar and a mound of candy. Before leaving the cell, he asked that his toy train be given to another inmate, Angelo Agnes, before shaking hands with other prisoners and guards.
Around 8 pm, Arridy was led by Warden Best up to Woodpecker Hill, where the gas chamber lay. As he entered, he maintained his smile—the only flicker of nerves was when he was blindfolded. To calm him down, one of the guards held his hand. At 8:13 pm, the room was vacated, a nozzle was turned on, and the gas released. Joe Arridy was declared dead 6 minutes later.
Official Pardon
Decades after his death, people who heard about Joe’s story couldn’t let it go. Historians, lawyers, activists—none of them could stomach what had happened, and a justice movement crept slowly forward.
In 2011—seventy-two years after the state killed him—Joe Arridy was officially pardoned by Colorado Governor Bill Ritter. It was the first posthumous pardon in the state’s history, with Ritter calling Joe’s case “a tragic example of injustice”—and he was right.
There’s no happy end to this story. Just a long-overdue acknowledgement that something went horribly wrong—that people laid the blame all too easily, that the stigma of mental health cast a dark shadow over the trial and dramatically affected notions of fair justice, and an innocent man who liked to play with toy trains died for no reason.
Key Takeaways
- Joe Arridy, with an IQ of 46, was wrongfully convicted of rape and murder in 1936.
- Public outrage and police desperation led to Arridy’s false confession and conviction.
- Arridy’s trial was a travesty, with no physical evidence and a coerced confession.
- Despite appeals and pleas for mercy, Arridy was executed in 1939.
- In 2011, Joe Arridy was posthumously pardoned, acknowledging a grave miscarriage of justice.

Simon Whistler
Simon Whistler is one of YouTube's most prolific documentary presenters, known for calm, authoritative deep dives into true crime, disappearances, and the world's most enduring unsolved cases. Into the Shadows is his companion archive for the cases he can't stop thinking about.
Frequently Asked Questions
Who was Joe Arridy?
Joe Arridy was a man with an IQ of 46 who was convicted of rape and murder in 1936. He was executed in 1939 despite evidence of his intellectual disability and lack of understanding of the charges against him.
What was the crime Joe Arridy was convicted of?
Joe Arridy was convicted of the rape and murder of a 15-year-old girl, Dorothy Drain, in Pueblo, Colorado.
Why was Joe Arridy an easy target for the crime?
Joe Arridy was an easy target because he was intellectually disabled, had a childlike demeanor, and was found wandering alone in Cheyenne, Wyoming, far from the crime scene.
What was the outcome of Joe Arridy’s trial?
Joe Arridy was found guilty and sentenced to die in the gas chamber despite a lack of physical evidence and a confession that was riddled with contradictions.
Who was Frank Aguilar and what was his role in the case?
Frank Aguilar was a real suspect in the murder of Dorothy Drain. He was coerced into implicating Joe Arridy as his accomplice, despite initially denying knowing him.
What efforts were made to save Joe Arridy from execution?
Attorney Gail Ireland fought to overturn Joe Arridy’s conviction, stalling the execution nine times. However, the state refused to back down, and Joe was executed on January 6, 1939.
What was Joe Arridy’s mental state and how did it affect his trial?
Joe Arridy had the mental age of a six-year-old and did not understand the charges against him or the trial process. This significantly impacted his ability to defend himself.
What was the public and political reaction to Joe Arridy’s case?
The public and political reaction was largely driven by a desire for vengeance and closure. Governor Teller Ammons prioritized political optics over morality, leading to Joe’s execution.
What was Joe Arridy’s final request before his execution?
Joe Arridy requested ice cream for his final meal and asked that his toy train be given to another inmate, Angelo Agnes.
When and why was Joe Arridy posthumously pardoned?
Joe Arridy was posthumously pardoned in 2011 by Colorado Governor Bill Ritter, acknowledging the injustice of his conviction and execution.
Sources
- Original Into the Shadows video: The Worst Miscarriage of Justice in US History.
- Hero image source by Christian Ursilva from København, Danmark / openverse, by-sa.
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