In an attempt to please Slender Man, the girls reportedly began organizing a plan to kill their friend, eventually picking the day after her birthday party to attempt her murder.
The day after the party, the girls took the victim to a local park to play a game of hide-and-seek. One girl instructed to other to “Go ballistic, go crazy,” and she allegedly began assaulting the victim. The victim was stabbed 19 times, before the girls reportedly told her that they would go and get help.
The girls apparently believed that Slender Man would then appear before them and take them to his mansion in the Nicolet National Forest, Wisconsin.