One of the most shocking crimes involving children in modern American history unfolded on May 31, 2014, in the quiet community of Waukesha, Wisconsin. The case, which became known worldwide as the “Slender Man Stabbing,” involved three 12-year-old girls and a fictional internet character that authorities say played a central role in the motivations behind the violent attack.
The victim, Payton Isabella Leutner, survived an astonishing 19 stab wounds after being left for dead in a wooded area near David’s Park. Her survival, recovery, and resilience would eventually become one of the most remarkable aspects of a case that sparked international debate about internet culture, childhood mental health, and the influence of online fictional content.
The Events of May 31, 2014
The incident occurred after Payton Leutner spent time celebrating a birthday sleepover with two of her friends, Anissa Weier and Morgan Geyser, both of whom were also 12 years old at the time.
According to investigators, the girls had spent months discussing a plan to kill their friend. They reportedly believed that carrying out the murder would please “Slender Man,” a fictional supernatural figure that originated on the internet and became popular through online stories, artwork, games, and videos.
The following morning, the three girls walked together to a wooded area near David’s Park in Waukesha. Once there, Weier and Geyser allegedly lured Payton deeper into the woods before launching their attack.
Authorities later determined that Geyser stabbed Payton multiple times while Weier encouraged the assault. In total, Payton suffered 19 stab wounds to her arms, legs, torso, and other parts of her body.
One of the wounds narrowly missed a major artery near her heart. Medical experts later stated that she came within millimeters of dying.
After the attack, Payton was left alone in the woods while the two perpetrators walked away.
A Miraculous Survival
Despite her devastating injuries, Payton managed to crawl from the wooded area toward a nearby road.
A cyclist riding through the area discovered the severely wounded girl and immediately called emergency services. First responders rushed her to a hospital where she underwent emergency treatment.
Doctors later described her survival as extraordinary. The severity of her injuries would have been fatal had help arrived much later.
Payton spent weeks recovering physically while also dealing with the emotional trauma of being attacked by two people she considered close friends.
Her determination and strength throughout her recovery would later inspire many who followed the case.
Who Is Slender Man?
At the center of the investigation was a fictional character known as Slender Man.
The character first appeared online in 2009 as part of a digital horror contest. Depicted as an unnaturally tall, faceless figure wearing a black suit, Slender Man quickly became a popular internet myth.
Thousands of users contributed stories, images, videos, and fictional accounts expanding the character’s lore. Over time, Slender Man became one of the internet’s most recognizable creepypasta creations.
Investigators learned that Weier and Geyser had become deeply immersed in these stories and reportedly believed Slender Man was a real entity.
According to court documents and psychiatric evaluations, the girls believed that killing Payton would prove their loyalty to Slender Man and allow them to live with him in a fictional mansion they believed existed within a national forest.
The case raised significant concerns about how young children process online fiction and fantasy, particularly when combined with underlying mental health challenges.
Investigation and Arrests
Following the attack, law enforcement quickly identified Weier and Geyser as suspects.
The girls were found walking along Interstate 94 after leaving the crime scene. During questioning, investigators learned about their obsession with Slender Man and the role it allegedly played in motivating the attack.
The revelations stunned the nation.
Many struggled to comprehend how two middle-school-aged children could plan and execute such a violent crime, particularly one connected to a fictional internet character.
The case quickly gained worldwide media attention and became one of the most discussed criminal investigations involving juveniles in recent history.
Mental Health Findings
As legal proceedings moved forward, psychiatric evaluations revealed significant mental health concerns.
Experts determined that Morgan Geyser suffered from severe mental illness, including symptoms associated with early-onset schizophrenia. Evaluations suggested she experienced delusions and hallucinations that affected her perception of reality.
Anissa Weier was also evaluated by mental health professionals. While her condition differed from Geyser’s, experts testified that she had participated in the attack under the influence of distorted beliefs and fears connected to Slender Man.
The mental health findings became a central component of the legal proceedings.
Trials and Sentencing
Because of the severity of the crime, both girls were prosecuted as adults.
In 2017, separate court proceedings resulted in both defendants being found not guilty by reason of mental disease or defect, commonly known as insanity.
Rather than serving traditional prison sentences, both were committed to secure psychiatric institutions.
Weier received a commitment of up to 25 years in a mental health facility.
Geyser received a commitment of up to 40 years due to the severity of her mental illness and her direct role in carrying out the stabbing.
The decisions reflected the court’s conclusion that mental illness played a substantial role in the attack.
Releases and Continued Monitoring
Over time, both women petitioned courts for release based on treatment progress and evaluations from mental health professionals.
Anissa Weier was released in 2021 under supervision and allowed to live with family members while complying with strict conditions.
Morgan Geyser remained confined for several more years before eventually being released to a supervised group home in 2025 under extensive monitoring requirements.
However, later that year, authorities reported that Geyser removed a court-ordered monitoring device and left the group home without authorization.
The disappearance prompted a search involving multiple law enforcement agencies.
She was located and arrested the following day in Posen, Illinois, before being returned to custody.
The incident renewed public debate about the balance between rehabilitation, mental health treatment, and public safety.
Payton Leutner’s Recovery and New Purpose
While much of the public attention focused on the perpetrators, many have viewed Payton Leutner’s recovery as the true story of resilience emerging from the tragedy.
Over the years, she gradually returned to school and everyday life while continuing to heal physically and emotionally.
In interviews, Leutner has spoken about moving forward despite the trauma she experienced. Rather than allowing the attack to define her life, she has focused on building a future for herself.
She has credited the medical professionals who saved her life with inspiring her interest in healthcare and medicine.
By sharing her story, Payton has become an example of courage and perseverance in the face of extraordinary adversity.
Lasting Impact of the Slender Man Stabbing
The Slender Man stabbing remains one of the most widely discussed criminal cases of the digital age.
The incident sparked conversations among parents, educators, psychologists, lawmakers, and internet safety advocates about children’s exposure to online content and the potential consequences when fantasy becomes blurred with reality.
The case also inspired numerous books, documentaries, academic studies, and films examining the intersection of internet culture, youth psychology, and violent crime.
Among the most notable projects was the documentary Beware the Slenderman, which explored the events leading up to the attack and the broader questions surrounding mental health and online influence.
More than a decade later, the case continues to be studied as a tragic example of how untreated mental illness, childhood vulnerability, and immersive internet mythology can intersect with devastating consequences.
Yet amid the tragedy, Payton Leutner’s survival remains a powerful reminder of human resilience. What began as a horrifying attempt on a young girl’s life ultimately became a story of survival, recovery, and determination—one that continues to inspire many years after that spring morning in Waukesha, Wisconsin.
