The notorious Slender Man stabber has sprung her group home! It's been more than a decade now since Morgan Geyser lured her best friend Peyton Leutner into the woods and brutally stabbed her 19 times at just 12 years old. The shocking 2014 attack, which also involved friend Anissa Weier, came in an apparent bid to appease the fictional, nightmare-ish internet legend known as Slender Man. Geyser and Weier later confessed to the stabbing and the former was convicted of first-degree intentional homicide in 2018. The two were then sentenced to a combined 65 years in a mental institution.