There are few modern monsters more notorious, or more recognized, than Slenderman. Although some Internet lore claims this thin, long-limbed, faceless creature in a suit has lurked in the background of human history for hundreds of years, the reality is that he was created online in 2009. Dr. Zarka explains the timeline of this Internet folklore sensation and discusses why his story became so popular. Part of the "Monstrum" series. Please note this title contains mature themes and discussions of violent acts.