On Lost, Ben Linus (Michael Emerson) is in charge of all the secrets The Others have. In real life, he's as clueless as the fans. He doesn't have to worry about giving away the show's secrets.
Interview: Michael Emerson On Lost
"They're not all that strict about it," Emerson said. "What it boils down to is I generally don't know that much. I may be a couple of episodes ahead of the viewers in terms of storyline but most of the big story secrets that people are keen to have exposed to them, I'm as keen as they are to try to find out."
With a hiatus of several months, the production has gotten five episodes ahead, but there aren't many big developments Emerson could share. "You're going to come back in mid-operation I believe and it's not going to be pretty for a while. The head of the makeup department, Steve LePort, built this amazing prosthetic out of latex and other unknown materials. It looks so real, it's complete with rubber veins and nerves and a latex tumor. It has plumbing inside it so that blood can well up in there. It's amazing."
We do know that Locke is on a mission to rescue Jack, Kate and Sawyer, so Emerson expects to reunite with Terry O'Quinn on a future episode. "I have missed working with Terry. I think there might be something coming up where we get to do some scene work together."
So far, there have been no plans for a Benjamin flashback episode. "That would be a really interesting flashback, wouldn't it? I don't think there's one coming soon. It would have to give away so much backstory, not just about him but about the island and the origins of all these miracles and mysteries, they would have to think carefully about it. But yeah, that would be a heck of an episode when and if it happens."
Emerson is committed to Lost for the rest of this season, but for all he knows, his death could be the season finale cliffhanger. "I suppose it's a possibility. I think every actor is sort of aware that none of his jobs are going to last forever, so I think every sensible actor has it in the back of his mind, 'Don't get too comfortable in this one.' So I don't really know. It would be fun to do another season, if any of the producers are out there listening."