Psychologist: Shared delusion led to Slender Man stabbing

Psychologist: Shared delusion led to Slender Man stabbing

Weier and Morgan Geyer baited colleague Payton Leutner into the forested areas at a recreation center in Waukesha, a Milwaukee suburb in 2014.

The jury's decision means Weier will spend time in a mental hospital, not in prison.

Weier's trial is to determine if she was suffering from a mental defect, as she has pleaded guilty to attempted murder with that as the reason.

Geyser's trial is scheduled to begin on October 16, the Milwaukee Journal Sentinel reported.

Weier made her first appearance in front of a jury of eight men and eight women on Tuesday in Waukesha County, Wisconsin, where her attorney, Joseph Smith, told jurors in court that her parent's divorce caused a depressed that descended her into madness as she latched onto Geyser.

"The potential release of an assailant that methodically planned and executed an attack in which our little girl was stabbed 19 times puts the community and our family at risk", the statement continued.

A Waukesha County jury in Anissa Weier's trial has found she was mentally ill in 2014, and she could not conform her behavior to the requirements of law.

Weier told authorities that she and Geyser believed they had to kill Leutner or else Slender Man would kill them and their families.

If the 12 jurors found Weier was legally responsible, prosecutors were planning to recommend a sentence of 10 years in prison and 10 years of extended supervision, according to the Journal Sentinel.

The two girls allegedly tried to killed Payton Leutner on Memorial Day, 2014, apparently in order to to please the internet horror character Slender Man. He said he believes Weier suffered from persistent depressive disorder and schizotypy, a condition on the schizophrenia spectrum.

Melissa Westendorf was appointed by a judge to evaluate one of the girls, Anissa Weier, now 15, after her insanity plea.

"There's no walking away for Anissa, no loophole", McMahon said. Jurors saw clips Wednesday of investigators questioning Weier after the attack, during which Weier moved from apparent complete belief in Slender Man, to some doubt, to a realization by the end of her interrogation that she had been duped.

Geyser, who did the stabbing, will go on trial next month. Her legal team successfully argued that she truly thought she was serving as a proxy for a supernatural creature called the "Slender Man".

Weier, now 15, pleaded guilty in August to being a party to attempted second-degree intentional homicide.

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