https://www.refinery29.com/en-ca/2021/07/10559335/anissa-weier-slenderman-stabbing-release-psychiatric-care
In 2014, Anissa Weier cheered on Morgan Geyser as she stabbed at 12-year-old girl 19 times to appease the "Slender man."
slender man stabbinganissa weierteenreleased