Many wonder who wrote the journals and why they where hidden.
My theory: there isnt one writer, there are three! One hint is that the journals have different descripthions over the same article, most noticeble the pages about Bill Cypher. This may imply that each journal is written by a different person.
But who are the writers?
According to the secret code in Rumble's Revenge there is a secret society in Gravity falls. They consisted of three friends who wanted to solve the mystery's of Gravity falls. I believe they where the original writers of the journals but broke up in some point in the past.
All or part of this message was removed by an administrator because it violated this wiki's Code of Conduct.
How about "2"? That person, i am afraid is still unknown. And its fate has maybe something to do with the portal device that stan activates at the end of season 1. A machine that probably only Old Man Mcgucket could build as he is a genius inventor.