Who is Slender Man? Slender Man, a menacing, faceless man in a dark suit – sometimes portrayed with octopus-like tentacles – was a crowdsourced internet-created boogeyman that first appeared in an online forum in 2009,

Morgan Geyser, one of the teens involved in the 2014 Slender Man stabbing case, was found at a gas station in Posen, Illinois, after escaping from her group home.

Morgan Geyser, one of the teens involved in the 2014 Slender Man stabbing case, was found at a gas station in Posen, Illinois, after escaping from her group home by allegedly cutting off her ankle monitor with scissors.

Morgan Geyser, who in 2014 stabbed a friend 19 times to appease the fictional character "Slender Man," allegedly told officers who asked for her identity to "just Google" her.

The Madison Police Department wrote on Facebook that she cut off her court-ordered monitoring bracelet and fled the facility on Saturday night. Police were notified on Sunday morning. The agency also released an image of Geyser taken via a security camera within the past month.