So

- Partridge indeed always was just an idiot, there was no story behind it.

- Haffner indeed always was just an idiot, there was no story behind it.

- Stiles indeed always was just a nut job cult leader, there was no story behind it.

- Kirkland indeed always was just a complete nut job, he even killed the only one able to identify Red John in the search for Red John. There was no story behind it.

- I have no idea who Bertram was, but he indeed just turned into a complete nut job and went on a killing spree out of nowhere. I have no idea how to come up with his story without lots of drugs involved.

- The guy writing "he is mar..." was indeed just an idiot who couldn't write just the name of his killer but wanted to make a poem out of it or whatever. There was no story behind it.

- Red John was indeed the leader of a secret organization and wanted Jane to lead the CBI into investigating his secret organization. To make it easier, he marked everyone with three dots - including himself. Well, at least he had no Red John smiley tattoo on his forehead.

Can we get the background story of the pigeon now?