Slender Man stabbing
On May 31, 2014, Anissa E. Weier (born November 10, 2001) and Morgan E. Geyser (born May 16, 2002) lured their friend, Payton Isabella Leutner, into a wooded area of Davids Park in Waukesha, Wisconsin, where they attempted to murder and sacrifice her to the Slender Man, a fictional supernatural being originating in creepypasta. Leutner suffered 19 stab wounds, but survived after being rescued by a cyclist.