Violent teen in Prestatyn brutally kills his caring mother after years of online radicalization and disturbing AI-assisted planning in North Wales

What began as a portrait of a devoted, family-first mother ended in one of the most disturbing crimes in recent memory, leaving a community and a family shattered beyond repair.

Angela Shellis, 45, was known to many as a loving and attentive parent whose life revolved around her two sons.

Her online presence told the story of a woman who cherished every moment with her children—posting affectionate captions like “My boys,” sharing snapshots of everyday life, and celebrating milestones that mattered deeply to her.

Behind those warm images, however, her younger son, Tristan Roberts, was quietly spiraling into a violent and toxic mindset that would ultimately lead to tragedy.

From Family Moments to a Dark Online Obsession

Angela’s Facebook page reflected a home filled with laughter, trips, and shared experiences.

Photos showed her sons enjoying outings to places like Blackpool and Paris, playing chess together, and relaxing at their home in Prestatyn, North Wales.

One post described her children as “young bingo lovers,” while another declared, “Home is where my boys are.”

Despite these moments of apparent joy, Roberts—who was diagnosed with autism and ADHD—was becoming increasingly immersed in disturbing online communities.

Authorities later found that he spent significant time consuming violent and misogynistic content, particularly on platforms like Discord.

Family members described Angela as “fiercely supportive,” someone who consistently tried to help her son despite growing challenges.

Even after separating from her husband and returning to North Wales, she structured her life around her children, taking a lower-paid job as a teaching assistant so she could remain close to them.

A Disturbing Turn Toward Violence

As Roberts’ behavior worsened, his online activity revealed an alarming fixation on violence.

He explored extremist ideas, expressed hatred toward women, and even turned to artificial intelligence tools in an attempt to plan his actions.

In court, it was revealed that he sought advice on how to carry out a murder, framing his intentions as “revenge, justice, vengeance.”

His messages indicated a growing detachment from reality and a dangerous preoccupation with control and harm.

Despite these warning signs, his mother continued to try to support him, with relatives later stating she “never gave up” on her son, no matter how difficult things became.

The Night of the Attack

The attack unfolded on October 23 last year at the family’s home on Coniston Drive in Prestatyn.

Suggested Readings (News continues below)

Middle East conflict spreads rapidly as Houthis attack Israel and Iran targets US and Saudi positions causing rising casualties across the region

Max Verstappen reveals doubts about Formula One future after frustrated qualifying disaster shakes Japanese Grand Prix at Suzuka Circuit in Japan

Pentagon raises urgent alarm over Tomahawk missile shortages as US burns through stockpiles in war with Iran in Middle East

Kylie Jenner stuns fans as she showcases bold cleavage in daring mini dress and drives Kylie Cosmetics sales while listing multimillion dollar mansion in Hidden Hills California

Angela was first assaulted inside the house before Roberts convinced her to leave with him under the pretense of seeking medical help.

Instead, he led her into a nearby nature reserve, where he carried out a brutal attack using a hammer purchased online for £20.

Investigators later discovered a trail of blood stretching over 100 meters, leading to her body hidden in undergrowth just off a footpath.

Disturbingly, Roberts recorded parts of the attack, later stating in the recording, “I just killed her… job’s done.”

He was also heard expressing shock at his own actions, saying, “Oh God, that was terrifying.”

A Family’s Unthinkable Loss

At Mold Crown Court, the devastating impact of the crime became painfully clear.

Angela’s son Ethan, 20, spoke of the incomprehensible loss, questioning how someone so loved could commit such an act.

“She’s the only person that’s ever done anything and everything for Tristan his whole life,” he told the court.

“She would do anything for us.”

Angela’s sister, Sarah Gunther, also described the family’s efforts to support Roberts, emphasizing that no one had ever stopped trying to help him.

She highlighted Angela’s unwavering devotion, calling her a mother who “never gave up.”

Inside the Courtroom Verdict

Medical experts concluded that Roberts was not suffering from a significant mental disorder at the time of the killing.

Prosecutors presented evidence showing a pattern of escalating violent intent and deliberate planning.

Judge Rhys Rowlands, in sentencing Roberts to life imprisonment with a minimum term of 22-and-a-half years, described the crime as calculated and deeply disturbing.

He noted that Roberts appeared to take a form of grim satisfaction in documenting the attack, asserting control over his mother in her final moments.

Impact and Consequences

The case has sent shockwaves through the community and beyond, raising urgent questions about the influence of online radicalization, the role of AI in facilitating harmful behavior, and the challenges of supporting individuals with complex needs.

It has also highlighted the devastating reality that even the most loving and supportive families can face unimaginable outcomes when warning signs go unaddressed or when intervention systems fail to keep pace with evolving threats.

For Angela’s family, the impact is permanent—a life defined by love and care cut short in the most tragic way, leaving behind grief, confusion, and unanswered questions.

What’s Next?

Authorities and mental health professionals are likely to continue examining how such cases can be prevented in the future.

Greater attention may be placed on monitoring harmful online spaces, improving early intervention strategies, and addressing the misuse of AI tools.

For families, the case underscores the importance of seeking support when behavioral changes emerge, while also highlighting the limitations of current systems in preventing extreme outcomes.

Summary

Angela Shellis was a devoted mother whose life centered on her two sons, sharing countless loving moments online that reflected a close-knit family.

Her younger son, Tristan Roberts, became increasingly isolated and radicalized through violent online content, ultimately turning his rage toward his mother.

The tragic events of October 23 led to a brutal killing that shocked the community and devastated the family.

Despite repeated efforts by Angela and her relatives to get Roberts help, the situation escalated beyond control, ending in a life sentence for the teenager.

Bulleted Takeaways

• Angela Shellis was known as a loving, family-focused mother who dedicated her life to her two sons.
• Her younger son, Tristan Roberts, became deeply influenced by violent and misogynistic online content.
• Roberts reportedly sought guidance from AI and online platforms to plan the killing.
• The attack took place after Roberts lured his mother from their home under false pretenses.
• A hammer purchased online was used in the fatal assault at a nearby nature reserve.
• Evidence showed the crime was planned, recorded, and carried out with disturbing intent.
• Family members described Angela as unwavering in her love and support for her son.
• Roberts was sentenced to life imprisonment with a minimum term of 22-and-a-half years.