Re: Fringe - Season 5 discussion
The one trailer did show Peter and Liv with a young Etta as a bunch of Observers show up.
If that is actual footage from the episode, it would seem to indicate that there is some kind of a flashback in the premier.
They say a little knowledge is a dangerous thing, but it is not one half so bad as a lot of ignorance. - Terry Pratchett, Equal Rites