hi wiki users:) ive gotta tell u something about the author of book 3 2 1 of gravity falls, according to the youtube videos i watched, old man mcguket is the writer of these 3 books, but in the trailer for the season 2, there is a man covered with black hoods and it tries to burry something the exact same place when dipper got book 3,but i think it is old man mcguket wearing black hoods and trying to burry a new book, i think it is a new book or it means that it is book 4. what do you think?