In a new interview, the Fringe showrunners Jeff Pinkner and Joel Wyman discuss the possibility of the show being renewed for season 5, and what they’ve got planned for the remaining eight episodes of season 4. Beware of spoilers.

In the Collider interview, the writers admit that they still don’t know whether Fringe will receive an additional season. But Wyman says:

If this is the last season, speaking for myself, I would obviously feel incredibly sad because I know how much of the story that we have left to tell, and that we would love to tell, but in the same breath, I feel that I could take care of the fans. The most important thing to us is feeling like we have an ending that would leave people feeling like, “Wow, I feel sad, but satiated. I feel like that was definitely worth my four years of investment. I really love these characters and I can see where it would have gone, but I feel good.” All we’re concerned about is making sure that the fans don’t feel like, “Wait, what? What happened? I’ve invested four years of my life and I don’t get any kind of resolution that makes sense?” That’s not what’s going on and, to be 100% frank, our partners at Fox would never want to consciously allow that to happen. Everybody knows that Jeff and I are very prepared. We’re ready for anything. Hopefully, we go on, but it’s out of our control.

Teasing the rest of the episodes in season 4, Pinkner says:

It’s definitely a game-changer, in that our characters learn a lot more, and the audience is going to learn a lot more, about the uber-plot of our season bad guy, David Robert Jones. For Peter, Olivia, and Walter, it’s going to start to unfold in ways that, hopefully, will be both really satisfying and challenging to our characters. It’s the 14th episode out of 22, and it’s very much a hinge episode that’s going to launch us into the back half portion of the season.

They also reveal that:

We have not written the finale, but we do know what it is. We’ve known the shape of our season before we even started this year.

Read the full interview at Collider.