Walter is off on an important search. This is a scene from the episode "Through the Looking Glass and What Walter Found There."

Fringe Season 5 Episode 6 Quotes

Don't you see Peter? I'm not safe. It's my mind. Ever since the pieces of my brain were re-implanted, it's been changing me back into the man I was before. Bit by bit, I'm losing myself Peter. I'm losing the man that you helped me become.


Walter: Please son, whatever happens, don't let me go.
Peter: I won't dad, I promise.