On May 31, 2014, two twelve-year-olds lured their friend, who was also twelve, into a wooded area of Davids Park in Waukesha, Wisconsin, where they attempted to kill and sacrifice her to the Slender Man, a fictional supernatural being originating in creepypasta. Their target, Payton Isabella Leutner, suffered 19 stab wounds, but survived after being rescued by a cyclist.
The perpetrators, Anissa E. Weier (born November 10, 2001) and Morgan E. Geyser (born May 16, 2002), were motivated by their belief in the Slender Man, and believed killing Leutner would appease him and prove his existence. Weier and Geyser were tried as adults in 2017. Both were found not guilty by reason of insanity, and committed indefinitely to mental institutions. Weier was sentenced to 25 years to life, and later released in 2021 to live with her father. Geyser was sentenced to 40 years to life and was later released in 2025 to live in a group home, to be kept under supervision until 2058.
