A new, longer trailer for the fourth season of Fringe has been released, showing off a bit of new dialogue.

The new trailer is almost entirely made up of quick hits from a battery of Peter Bishop episodes past, including "Subject 13," where we meet a very young Peter. But then the new stuff starts to shine through. Olivia says to someone, who we assume is Agent Lincoln Lee:

"We're all really good at pretending that the loneliness isn't there, and then, something comes along, to remind us."

And it sounds like she's aware that there's a hole in her life, where Peter ought to be.

The new season will premiere on September 23, 2011.