A teenager who vanished at 15 was found alive 521 days later, after a desperate message sent through an unlikely channel finally reached someone who could help.
Her alleged captor had kept her isolated in a basement, but a game gave her a way to alert the outside world.
The November 1 rescue of 17-year-old Kylie Arellano has since drawn renewed attention to a disturbing online subculture known as 764, whose members are accused of gr**ming, blackmailing, and coercing children into acts of extreme harm.
Highlights
- Held captive for 521 days, 17-year-old Kylie Arellano finally found a way to alert the outside world through an unlikely video game.
- Her recent rescue has renewed attention on ‘764,’ a disturbing online network accused of exploiting vulnerable young children.
- The FBI says it is tracking more than 500 subjects linked to the disturbing network, as officials warn that no corner of the internet is beyond their reach.
Now, as federal officials investigate the case, the teenager’s rescue has brought fresh attention to how predators can use familiar online spaces to target vulnerable children.
17-year-old Kylie Arellano was rescued after 521 days in captivity thanks to an online game
Trigger warning: This article contains descriptions of crimes against children that some readers may find distressing.
Kylie Arellano was 15 when she disappeared from her home in Utah on May 29, 2025.
According to federal court documents, she had connected with 39-year-old Adam Hunter Harmel online, and investigators allege he offered her money before driving from Oregon to pick her up in Perry, Utah.
After she got into his vehicle, Harmel allegedly took her phone and threw it into a river in Logan Canyon, cutting off her ability to contact her family or be tracked.
He then drove her across state lines to his home in Huntington, Oregon, where prosecutors say he kept her confined in a basement.
Authorities initially treated her disappearance as a possible runaway case, as she had packed belongings before leaving.
But after more than 17 months, a chance online interaction finally helped investigators locate her.
In October 2026, Harmel allegedly gave Arellano access to an old phone that could connect to Wi-Fi but had no cellular service.
She used it to play the multiplayer game ‘Among Us,’ where she connected with another minor and disclosed that she was being held against her will.
She reportedly shared news reports about her own disappearance to prove her identity.
The other player then told their mother, who contacted the FBI.
Investigators then arranged a monitored video call with Arellano, during which she showed them the knife allegedly used to threaten her and provided clues to her location.
Court documents detail the alleged a**se the teenager endured after disappearing in May 2025
Last week, FBI agents and Oregon State Police raided the property and brought her to safety.
She was taken to a hospital for evaluation and later reunited with her family.
The federal court documents describe a prolonged ordeal involving physical a**se, threats, and attempts to prevent Arellano from escaping or being recognized.
According to documents reviewed by Fox News Digital, Harmel allegedly became “very violent and aggressive, often hitting” the teenager.
He also allegedly forced her to remove her dental braces using pliers, apparently to make her harder to identify.
The documents further state that Harmel “kept a knife under his pillow and made MV [minor victim] sleep against the wall.”
The alleged arrangement kept the teenager close to him while he slept, making it harder for her to get away.
Harmel was arrested during a traffic stop in Ontario, Oregon, on November 1.
He has reportedly been charged with transporting a minor across state lines with intent to engage in criminal s**ual activity.
In a statement, US Attorney for the District of Utah Melissa Holyoak said the priority was the “safe return of the minor victim.”
She added, “Those who allegedly exploit and prey upon the most vulnerable members of our communities will be relentlessly investigated and held accountable.”
Arellano’s case has brought renewed attention to 764, a decentralized online network associated with the exploitation of minors and the glorification of extreme violence.
However, the FBI’s investigation did not begin with her rescue.
The FBI had been investigating the “global violent extremist network 764” for years before Arellano’s rescue
Authorities had been pursuing the network for years, with cases and arrests predating the Utah teenager’s disappearance.
The Institute for Strategic Dialogue (ISD), which has studied the network, describes an online ecosystem in which perpetrators “target vulnerable young people through gaming platforms, social media, and messaging apps.”
They may first build trust before using threats, blackmail, or the threat of exposing private material to coerce victims.
The group has also been linked to the circulation of graphic material involving self-h**m and violence.
Investigators and researchers have warned that perpetrators may pressure children into recording harmful acts and then share the footage within online communities to intimidate victims and gain status.
The network is decentralized, with different groups and offshoots operating across online platforms.
This makes investigations complex, as authorities must identify individuals and connected communities rather than pursue one centralized organization.
The FBI’s public warnings and earlier cases show that the threat was already on its radar well before Arellano was located.
Her rescue has nevertheless put a human face on the dangers investigators have been warning about.
FBI Director Kash Patel says all 56 field offices are investigating more than 500 people linked to 764
Following the teenager’s rescue, FBI Director Kash Patel issued a warning to people involved in groups that target and exploit children, saying the Bureau was using every available resource to pursue them.
“The FBI and our partners are coming for you. We are using every tool at our disposal to combat nihilistic violent extremism, bring offenders to justice, and protect America’s most vulnerable,” Patel said.
In a separate post, the FBI said it was focused on hunting down and dismantling the 764 network, adding that there had been a 697% increase in arrests related to nihilistic violent extremism in 2025.
The Bureau also stated: “No child is your prey. No corner of the internet is safe.”
The FBI has said it is investigating more than 500 subjects linked to the network and its offshoots.
The scale of the probe reflects the challenge of tracking a decentralized online ecosystem whose members can use multiple platforms and aliases.
Federal authorities have also pursued individual leaders.
On October 9, 2026, the Department of Justice announced that Prasan Nepal, described as a senior leader of 764 and 764 Inferno, had pleaded guilty to conspiracy to s**ually exploit minors.
Assistant Attorney General for National Security John A. Eisenberg said in a public statement, “Nepal used his leadership role within 764 to orchestrate the systematic exploitation, t**ture, and psychological destruction of children for the twisted satisfaction of an online network built on cruelty and chaos.”
He added, “We will not rest until every member of this network, and others like it, are held accountable.”
“Sounds like straight out of a horror movie. No punishment is good enough, hopefully he will be imprisoned for life,” one netizen wrote
