LOS ANGELES (Reuters) - As "Lost" returns for its highly-anticipated final season on February 2, even the cast aren't sure how the desert-island survival series will end.
And its creators on Tuesday warned that not all loose ends would be tied up.
"Not every question is going to be answered," executive producer Carlton Cuse told TV reporters. "If we tried to answer every question, it would be very pedantic."
"Hopefully there will be a healthy cocktail of answers, mystery, character resolutions, and some surprises, he said.
Cuse and co-creator Damon Lindelof said the new season picks up immediately after the 5th-season cliffhanger when a modified nuclear bomb was detonated.
Other than that -- and the reappearance of season-two clinical psychologist Libby, played by Cynthia Watros -- no-one was saying.
In fact, Lindelof and Cuse said that although they had decided five years ago how the ABC series would end, they were still working on writing the final episodes.
"We came up with the final image of the show a long time ago, when we started plotting the mythology of the first season," Cuse said.
"A lot of the character stuff will get worked out as we go along... We have a sense of where we are going to end the show, but we are still in the process of executing it," he said.
"Lost", one of the most expensive series on U.S. television because of its large cast and production base in Hawaii, has won 58 awards, including a Golden Globe and an Emmy, since it debuted in 2004 to armies of fans around the world.
But for newcomers keen to catch up with the complex, time-shifting plot before the show starts its final series, hope is not lost.
Producers said ABC would run a recap show summing up the previous five seasons ahead of the season premiere.
Only seven episodes of the 6th season have been shot so far, and most cast members said there were in the dark about the ultimate fate of their characters.
As for the long-awaited finale, Lindelof told reporters; "We have had a lot of time to think about it. There is certainly a hope that everybody loves the ending.
"But I don't think it would be 'Lost' if there wasn't an active debate among the people who watch as to whether it was a good ending."