Who's Afraid of the Slenderman?

“They say that he is beyond time. That he has appeared in previous ages as the reaper, that you can see him in the shadows of paintings, that you can read him in the lines of poetry throughout the ages, that he is the dark man in Poe’s ‘Masque of the Red Death’, that he came to people of the Dark Ages and they called him Grendel, and he came to every age clad in the attire of noblemen of the time,...