By all accounts it’s a big one tonight, Fringe friends! It’s appointment TV for me every week, but I know some of you have been anxious to get even more answers than usual; this episode will reportedly do the trick. Of course the biggest question of all may be will there be a Season 5?

We don’t know, the showrunners say they don’t know, but TVLine has heard a rumor that there will be a fifth – and final – season. We love that they did this with Chuck and they’re doing it with Eureka. Everyone gets a chance to say goodbye, and hopefully the show gets the finale it deserves. While we hate the “and final” part of that rumor, we’ll still take it and be grateful.

Back to tonight, however – check out these three clips and the featurette of our favorite lab rats talking about this pivotal episode:

[youtube]http://www.youtube.com/watch?v=yB3-ETezj3I&hd=1[/youtube]

[youtube]http://www.youtube.com/watch?v=WZ-tDTULOw0&hd=1[/youtube]

[youtube]http://www.youtube.com/watch?v=vLA3ZinuftQ&hd=1[/youtube]

[youtube]http://www.youtube.com/watch?v=bBQEZJ_BYvE&hd=1[/youtube]

Fringe, starring Anna Torv, Joshua Jackson, John Noble, Jasika Nicole, and Blair Brown, airs Friday nights at 9/8c on Fox.