The eerie figure known as Slender Man has become a cultural phenomenon, weaving its way through internet lore, video games, and online storytelling.

Morgan Geyser tried to kill her classmate Peyton Leutner when they were 12 years old Morgan Geyser, who at the age of 12 stabbed her classmate to impress the mythical internet figure "Slender Man," ...

Morgan Geyser, who stabbed Payton Leutner in 2014 in an effort to please the fictional character Slender Man, is set to be released from a Wisconsin psychiatric hospital, a judge ruled Jan. 9.

The Slender Man character is believed to have originated in an illustration from 2009 of a tall, thin man with tentacle-like arms and abilities including mind control and teleportation.

An curved arrow pointing right. HBO is releasing a new documentary about Slender Man, a tall, shadowy monster that has terrified people on the internet for years. The character may be fake ...

A Wisconsin judge granted an early conditional release Thursday to Morgan Geyser, who was convicted of stabbing her childhood friend more than a decade ago. Geyser, then 12 years old, along with ...

Three psychologists said Morgan Geyser is mentally ready for supervised release. Morgan Geyser, one of the two assailants in the 2014 Slender Man stabbing case, will be released from a mental ...

A judge granted Geyser's conditional release on Thursday. Here's how an attorney said the process could shake out.

Morgan Geyser, who stabbed Payton Leutner in 2014 in an effort to please the fictional character Slender Man, is set to be released from a Wisconsin psychiatric hospital, a judge ruled Jan. 9.