They forced their victims to drink corrosive drain cleaner, which the perpetrators believed would fatally poison their hostages, but instead caused burns to their mouths and throats.

Further violence included kicking a pen into an ear and the brutal rape of an eighteen-year-old woman, before three of the victims were fatally shot.

Police only had enough evidence to convict three enlisted United States Air Force airmen: Dale Selby Pierre, William Andrews, and Keith Roberts; the three others involved were never caught.

[2][3] On April 22, 1974, Dale Selby Pierre, William Andrews, Keith Roberts, and three other men drove in two vans to the Hi-Fi Shop at 2323 Washington Boulevard, Ogden, just before closing time.

Andrews returned with a bottle in a brown paper bag, from which Pierre poured a cup of Drano-brand drain cleaner.

Pierre ordered Orren to administer it to the other hostages, but he refused, and was bound, gagged, and left face-down on the basement floor.

[7] Pierre and Andrews then propped the hostages into sitting positions and forced them to drink the Drano, telling them it was vodka laced with sleeping pills.

Pierre and Andrews tried to duct-tape the hostages' mouths shut to hold quantities of drain cleaner in and to silence their screams, but the oozing blisters prevented the adhesive from sticking.

[6] Pierre took Ansley to the far corner of the basement, forced her at gunpoint to remove her clothes, then repeatedly raped her after telling Andrews to leave for 30 minutes.

Orren's son heard noises coming from the basement and broke down the back door, while Mrs. Walker called the Ogden police.

Cortney, although not expected to live, survived with severe and irreparable brain damage; he was hospitalized for 266 days before being released.

[4][17] In spite of his injuries, Orren was able to give a description of the two leading robbers, with that of the man who fired the killing shots on the other victims, a short-statured, bespectacled black male with a Caribbean accent, later being identified as Dale Pierre.

[18] Hours after news of the crime broke, an anonymous Air Force employee called the Ogden police and told them that Andrews had confided to him months earlier, "One of these days I'm going to rob that Hi-Fi shop, and if anybody gets in the way, I'm going to kill them."

Hours later, two teenage boys dumpster diving at Hill Air Force Base, near the barracks Pierre and Andrews were living in, contacted the police after discovering the victims' wallets and purses, recognizing their pictures from the drivers' licenses.

[7][18][19] Detective Deloy White, who responded to the scene, believing the killers might be in the crowd, put on a show for the gathered airmen.

Later, he noted that most of the service personnel who gathered around the dumpster stood still and watched in relative silence, with the exception of two men, later identified as Pierre and Andrews, who paced around the crowd, speaking loudly and making frantic gestures with their hands.

Following the issuance of another search warrant, stereo equipment taken from the Hi-Fi Shop, later identified via serial numbers, was recovered from the storage unit.

[6] The joint trial of Pierre, Andrews, and Roberts for first-degree murder and robbery began on October 15, 1974, in Farmington, in neighboring Davis County.

[21] During the trial, it was revealed that Pierre and Andrews had robbed the store with the intent of killing anyone they encountered, and, in the months prior, had been looking for ways to commit the murders quietly and cleanly.

Ogden Police Department Officer Deloy White, who was a detective when he worked the case, observed: "Andrews was the brains behind the whole deal, the one who organized it [...] Pierre was the enforcer.

"[1] Andrews would corroborate White's statement in an interview with KUTV before his execution in 1992, admitting that he targeted the store after becoming acquainted with Stanley Walker a few months prior to the robbery and blaming solely Pierre for the excessive violence leading up to the killings.

Pierre declined a last meal, instead spending his final day fasting, praying, singing hymns and reading the Bible.

The only way to prevent what happened was to have been moved away from the Air Force entirely… Of course the alcohol and the pills I was consuming didn’t help—valiums, reds, black beauties and yellow jackets.

"[29] Walker said that his younger son, traumatized by his older brother's murder, slept on a mattress in his parents' bedroom and refused to go into the basement of the house.

Andrews' death conviction was considered especially controversial, because he did not directly kill any of the victims, although he did admit to forcefully administering Drano down their throats.

[10] However, the Deseret News reported that Gilmore's parting words to the Hi-Fi killers, moments before his execution were: "Adios, Pierre and Andrews.

The prosecution also stated that Roberts had been seen pacing back and forth in front of the Hi-Fi store around the same time the killings occurred, despite his insistence that he stayed in one of the vans for the duration of the robbery.

A letter from a representative of Pope John Paul II, signed by 40 members of clergy from Utah, also asked for clemency for Andrews; the Church of Jesus Christ of Latter-day Saints did not endorse the request.

[45] In December 1996, the Inter-American Commission found that the United States had violated its international obligations by denying William Andrews a trial free from racial discrimination.