• Video
  • Shop
  • Culture
  • Family
  • Wellness
  • Food
  • Living
  • Style
  • Travel
  • News
  • Book Club
  • Newsletter
  • Privacy Policy
  • Your US State Privacy Rights
  • Children's Online Privacy Policy
  • Interest-Based Ads
  • Terms of Use
  • Do Not Sell My Info
  • Contact Us
  • © 2026 ABC News
  • News

Girl Accused in Slender Man Stabbing to Plead Insanity: Lawyer

Morgan Geyser, 14, will plead not guilty due to a mental disease or defect in the Slender Man stabbing case, her lawyer said.
Pool
ByJULIA JACOBO
August 19, 2016, 11:38 PM

— -- One of the two girls accused of trying to sacrifice a 12-year-old classmate to a horror figure named Slender Man by stabbing her will enter a plea of insanity, according to her attorney.

Morgan Geyser, 14, who was also 12 at the time of the May 2014 stabbing, will plead not guilty by reason of mental disease or defect, her lawyer, Tony Cotton, said during a court appearance in a Waukesha County, Wisc. Friday. Cotton also requested a change of venue for the trial.

The other girl charged with attempted murder, 14-year-old Anissa Weier, who was also 12 at the time of the attack, also appeared in court.

Judge Michael Bohren appointed two doctors to conduct evaluations of the girls to be considered at the next court hearing on Oct. 13. Bohren said he anticipates setting a court date for March or April 2017.

Related Articles

Look Inside 'Slender Man' Stabbing Suspect's Notebook

Related Articles

Why Did 12-Year-Olds Stab Friend For ‘Slender Man’?

Related Articles

'Slender Man' Stabbing Survivor Returns to School

Both Geyser and Weier will be tried as adults on the charge of first-degree international attempted homicide. Cotton said he does not plan to appeal the ruling that ordered them to be tried as adults.

They are accused of tricking their friend into coming over for a sleepover before they allegedly led her to a nearby forest and stabbed her 19 times. The victim survived.

Last year, Cotton told ABC News that Geyser committed the crime because she "believed in Slender Man."

Up Next in News—

This San Francisco shop is run completely by an AI agent

April 23, 2026

Mother charged after teen son allegedly hits and injures 81-year-old veteran while riding e-motorcycle

April 23, 2026

UK bill banning smoking products for those born after 2008 is one step away from becoming law

April 22, 2026

Pilot killed in Florida plane crash hailed as hero

April 21, 2026

Shop GMA Favorites

ABC will receive a commission for purchases made through these links.

Sponsored Content by Taboola

The latest lifestyle and entertainment news and inspiration for how to live your best life - all from Good Morning America.
  • Contests
  • Terms of Use
  • Privacy Policy
  • Do Not Sell My Info
  • Children’s Online Privacy Policy
  • Advertise with us
  • Your US State Privacy Rights
  • Interest-Based Ads
  • About Nielsen Measurement
  • Press
  • Feedback
  • Shop FAQs
  • ABC News
  • ABC
  • All Videos
  • All Topics
  • Sitemap

© 2026 ABC News
  • Privacy Policy— 
  • Your US State Privacy Rights— 
  • Children's Online Privacy Policy— 
  • Interest-Based Ads— 
  • Terms of Use— 
  • Do Not Sell My Info— 
  • Contact Us— 

© 2026 ABC News