Day 13 is the Urban Legend Hook Man. Everyone's heard the story of the escaped lunatic convict that had a hook for a hand and the couples he would stalk that were out of gas on the side of a lonely highway. Here's the Hook Man himself. Maybe Scooby and the gang could catch him.
Artist Notes - Pencil sketch done with a 2B Graphic Derwent pencil on Hammermill Color Copy Digital paper (28lb, 100 brightness).