I just have a feeling about Bertram... and I might be going a bit far-out here but here me out...

The writing on the wall when Jerod was killed, it could have meant "He is Married"

Indicating a red john accomplice... now with all the connections to Lisbon behaving strangely, would it not be a fantastic twist if she was Red Johns wife?

Anyway, just wanted to share the married thing, seems to be something a friend of a friend would know.