SisterNightroad

Hi, I'm new and I'm searching for a specific Bones episode of which I don't remember the title, so I thought to ask to other fans and make a thread for searching specific episodes.
I think it was one of the earlier seasons, I remember there was a girl, I think she was the victim, that kept a diary written in a sort of secret "code", using an elaborate poetic and metaphoric or simbolic language so that when other people read her diary couldn't immediately recognize the personal event she was talking about or the people involved.
Thank in advance for any help.