07/31/2008 at 06:00 AM EDT
Screaming fans begged for autographs and waved homemade signs Wednesday night at the U.K. premiere of The X-Files: I Want to Believe
"It's gratifying that people love the show so much," David Duchovny, 47 – star of the movie and the cult hit television series – told reporters.
But is this the end for the X-Files
and its heroes, F.B.I. agents Fox Mulder and Dana Scully?
The movie – the second feature film based on the sci-fi series that ended in 2002 – generated a moderate $10.2 million at the U.S. box office. Now international moviegoers may shed some light on whether there's another sequel.
"We did this [movie] so that it's a possibility that it's the last time you'll see Mulder and Scully," director Chris Carter, 51, said on the red carpet. "We didn't do this as the last one. We did it as if it could
be the last one."
Gillian Anderson, who is expecting her third child
, didn't stop to speak with reporters.
Duchovny told PEOPLE that his Showtime show, Californication
, has just finished filming its second season. The actor – who has two kids with his wife, Téa Leoni – will return home to L.A. on Thursday for some rest and relaxation.