Morgan Geyser, who stabbed a classmate to please ‘Slender Man,’ goes missing in Wisconsin after cutting off her monitoring bracelet and leaving her group home; what do we know so far as probe continues

A 22-year-old woman from Wisconsin who nearly stabbed a classmate to death to please the horror character Slender Man in 2014 was missing, police officials said on Sunday (November 23, 2025). They further stated that the woman identified as Morgan Geyser cut off a monitoring bracelet, left a group home, and is missing, CBS News reported.

According to CNN and CBS News, Geyser was last seen in the area of Kroncke Dr. on the west side of Madison around 8 PM on Saturday with an adult acquaintance, police and city officials said. Her whereabouts are unknown as of Sunday morning. Amid the investigation into the matter, police released a recent image of Geyer that was captured on security video.

Geyser was released from psychiatric hospital earlier in 2025

Geyser was released earlier this year from Winnebago Mental Health Institute, a psychiatric hospital where she had spent the last seven years, according to CBS News. She has been living in a group home, and she was released after three experts testified she had made progress battling mental illness.

The 2014 stabbing incident

In 2017, the attorney of Geyser, who told investigators she helped stab a classmate, was convinced the crime would protect her and her family from a horror character called Slender Man, who she thought was real, according to AP.

Geyser and her friend, Anissa Weier, lured Payton Leutner to a Waukesha park after a sleepover in 2014, CBS News reported. Geyser stabbed Leutner 19 times while Weier egged her on. At the time the crime took place, all three girls were 12 years old. She and Weier fled after the attack but were arrested as they were walking on Interstate 94.

They told investigators they attacked Leutner to earn the right to be Slender Man's servants and feared he would hurt their families if they didn't follow through. They had planned to walk to Slender Man's mansion in northern Wisconsin after the attack, they said.

Geyser pleaded guilty

Geyser pleaded guilty for trying to help a party in attempted first-degree intentional homicide in 2017. She, however, claimed that she was not responsible because she was mentally ill. In 2018, Waukesha County Circuit Judge Michael Bohren had committed her to a psychiatric hospital for 40 years.

Weier pleaded guilty to being a party to attempted second-degree intentional homicide with a dangerous weapon in 2017. Similar to Geyser, she also claimed that she was mentally ill and not responsible for her actions. According to CBS News, she was committed to 25 years in a mental hospital but was granted release in 2021. She was released on the condition that she would live with her father and wear a GPS monitor.