A prosecutor said Geyser needs to be sent back to a mental institution.

Geyser was taken into custody in Illinois, according to police.

Wisconsin authorities have asked a state court to revoke the conditional release of Morgan Geyser, the woman who in 2014 ...

The young woman known for the "Slender Man" Stabbing was in court on Tuesday.

One of the women behind the 2014 Slender Man stabbing is expected to appear in a Cook County court Tuesday for an extradition ...

The whereabouts of Morgan Geyser, who in 2014 stabbed a friend 19 times to appease the fictional character "Slender Man," were unknown as of Sunday after she allegedly cut off her Department of ...

CHICAGO, IL - The woman who admitted to nearly stabbing a classmate to death at age 12 to please the online horror character ...

Slender Man stabbing assailant Morgan Geyser has returned to Wisconsin after her escape from a Madison group home and arrest in ...

Morgan Geyser, the assailant in the 2014 Slender Man stabbing case in Wisconsin, was arrested Sunday night in the south ...

Morgan Geyser, who in 2014 stabbed a friend 19 times to appease the fictional character "Slender Man," was located Sunday night after she allegedly cut off her Department of Corrections monitoring ...

If her conditional release is revoked, she could be sent back to the mental institution where she spent most of the past ...