On August 17, 2008, eighteen-year-old Morne Harmse arrived at school in Krugersdorp, South Africa. The young man, described by his classmates as quiet, well-mannered, and playful, then did something unthinkable. With accusations of Satanism, the idolization of heavy metal bands like Slipknot, and the boy's use of a Samurai sword, this is one of the most unusual killings ever committed. We investigate why it might have happened.

On August 17, 2008, eighteen-year-old Morne Harmse arrived at school in Krugersdorp, South Africa. The young man, described by his classmates as quiet, well-mannered, and playful, then did something unthinkable. With accusations of Satanism, the idolization of heavy metal bands like Slipknot, and the boy's use of a Samurai sword, this is one of the most unusual killings ever committed. We investigate why it might have happened.