"The show is now only surviving based upon the passion of our fans," Jackson tells THR.

As Fringe nears the end of season 4, what exactly does the future hold?

"The story as it finishes this year is really the ending of the story that was introduced in the first season, as much as it is the ending of this year's chapter of the show," Josh Jackson told The Hollywood Reporter at the Television: Out of the Box exhibit opening at Paley Center on Thursday evening.

Of course, Jackson was light on details, but perhaps the parties involved may shine a light to future events. "But I can't tell you anything about it because if I tell you who's involved in it, it will give it away," he answered with a glint in his eye.

Jackson also talked about joining the Twitter world ("It's a bit full-on, it's quite a lot") and the interaction he's had since and admitted that Fringe's survival rests on the social media fervor that takes place Friday nights at 9 p.m. when the show airs.

"The show is now only surviving based upon the passion of our fans," he says, "because we don't have a large audience or large viewership but the people who do watch it are incredibly fired up about it."

Watch the video above to see what Jackson had to say about a recent episode that he was impressed by.

Fringe airs Fridays at 9 p.m. on Fox.