When an unsuspecting researcher followed a mysterious command on a 4chan board, he found himself drawn into a scavenger hunt that led him down the darkest corridors of the internet and stretched across the globe. But in a place where no one shows his face and no one plays by the rules, how do you tell where the game ends and reality begins?

via Chasing the Cicada: Exploring the Darkest Corridors of the Internet | Mental Floss.