For only 13 episodes, 'Fringe' season 5 has quite a bit of work ahead of it. Not only do we have to somehow get from the modern day to the Observer-dominated future seen in season 4's "Letters of Transit," but also manage to incorporate Leonard Nimoy's character William Bell, who was observed to play a role even before appearing in season 4 finale "Brave New World." So what does Nimoy himself have to say about the coming season?

'Fringe' fans are waiting on baited breath for news of the show's fifth and final season, particularly over whether or not they'll see 'Star Trek' icon and fan-favorite character William Bell, who menacingly made his presence known across the finale before disappearing defeated into the aether.

The character's appearance proved especially shocking given his much nobler end at the end of the show's second season, but with the timeline reset, and the character ready to be rewritten, Nimoy was easily coaxed out of his so-called retirement "There were challenges in the character itself that were attractive to me," says Nimoy. "I could play aspects that I haven't played in a long time, so it was very welcoming to me."

So even though the story would seem to dictate that Nimoy need reprise his role, can fans in fact expect William Bell to make further appearances, given the limited run of episodes? Speaking to SciFiNow, Nimoy says:

It will depend on what they have in mind for the character. There are a lot of issues that have to be dealt with, but we'll be talking, The William Bell character started as a very intelligent and rational character. I think he's still very, very intelligent, but I'm not quite so sure that he's rational anymore.

What say you? Do you think Nimoy needs to reprise his role to make a complete final season of 'Fringe,' or are Anna Torv, Joshua Jackson and John Noble enough? How do you think the final season of 'Fringe' will play out? Give us your own theories in the comments!