Morgan Geyser

In May 2014, Morgan Geyser and Anissa Weier stabbed their classmate Peyton Leutner 19 times in a forest in Wisconsin to please the fictional internet-horror character Slender Man. However, Peyton survived the attack and was saved by a biker who saw her crawling through the forest.

Morgan was sentenced to 40 years in a psychiatric hospital, while Anissa only received 25 years. In 2021, Anissa was granted a supervised release, while Morgan was granted a conditional release to a group home in early 2025.