Wednesday, June 2 2010, 12:54pm EDT
By Catriona Wightman, TV Reporter
The cast of Fringe have discussed the cliffhanger at the end of the second season.
During the final episode, it emerged that Olivia's alternate had taken her place in this universe.
In a video on the Fox website, John Noble, who plays Walter, said: "It's stunning. The relevation, it was stunning to me. And the opportunities that it opened up for us."
Noble also revealed that he is pleased with the way the relationship between Walter and Peter (Joshua Jackson) was dealt with, saying: "We deliberately leave Walter and Peter in a state of truce. That's the best we can do. It would be cheating to do anything else at this time."
Meanwhile, executive producer Akiva Goldsman suggested that Walter and his alternate could meet in the next season.
"We certainly discussed Walter and Walternate interacting," he said. "And I think that is certainly to come. The promise of that I think is another lure to bring us back... The more distance you put between them, the more interesting when they finally meet."
Jasika Nicole, who stars as Astrid, added that the series could keep expanding.
"There have to be more than just these two universes," she said. "Surely there's a lot of alternate universes out there."