We are going to tell you why the plane crashed, "Lost" executive producer Carlton Cuse promised in Newsweek, looking forward to the season finale tonight.

"We're going to explain what happens if you don't push the button. And we're going to resolve the Michael-and-Walt story."

Given access to the producers as the season comes to a close, Newsweek writer Marc Peyser predicts that just as last year's finale expanded the scope of the island's boundaries, this year's will expand its relevance.

Peyser interviewed the cast of the ABC hit drama "Lost" on the set in Honolulu.

One more thing: It's likely another character is going to die, or come close, Peyser writes in the May 22 issue of Newsweek. But that's just a hypothesis, based on the fact that when Newsweek asked Michelle Rodriguez to guess which character would die after Libby, she said, "I can't do that, 'cause I know." Then she clammed up.

The cast appeared exhausted — and seemed to be getting on one another's nerves, Peyser observed.

"It's tough being involved in a shoot with a large cast," said Dominic Monaghan in the Newsweek interview. "Just the sheer politics can drag you down. So-and-so is not getting screen time. So-and-so is not showing up on time. So-and-so isn't behaving well on set. That's the toughest thing — coming home and going, 'Well, I behaved OK, but three or four people didn't.' "

Monaghan met with a reporter while sitting in his trailer, with the floor piled with FedEx envelopes filled with fan mail.

"We're like brothers and sisters," Evangeline Lilly told Newsweek. "There are days when you want to thank them for being in your life, and there are days when you want to punch them in the face."

Do the actors worry about their fates? "Sure, I'll be out of a good job," said Terry O'Quinn, who plays Locke on the show. "I don't think there's any person on this show who is not expendable. If I said they didn't have the nerve to kill me, I'd be some kind of fool, wouldn't I?"

The creators of the show warned fans not to try to connect every plotlet. "We never promised that there would be a unified-field theory of 'Lost,' " said Damon Lindelof, who created the show with J.J. Abrams ("Alias," "Mission: Impossible III"). "You'll get many small answers along the way, and ultimately you will understand this island, but all those answers might not necessarily be reduced to a simple one-sentence explanation."