Officials revoked Morgan Geyser’s conditional release from a mental health facility in Waukesha County Court today (Tuesday). Geyser, who was serving a 40-year sentence at the Winnebago Mental Health Institute for the 2014 stabbing of her classmate to please the fictional character Slender Man, was arrested in Illinois last month after she allegedly cut off her electronic monitoring bracelet and left the Madison group home she was placed in. Last week, Geyser’s attorney sent a letter to the judge in the case stating her decision not to contest the revocation. She was 12 years old at the time of the Waukesha stabbing.
Morgan Geyser conditional release revoked
Dec 23, 2025 | 1:25 PM
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