The new X-Files film has had its world premiere in Hollywood six years after the TV series finished.
The storyline surrounding I Want to Believe has been a closely guarded secret since filming finished in March.
David Duchovny, who plays Fox Mulder, says fans will find the plot familiar: "It concentrates more on Mulder and Scully's relationship."
The X-Files series ran between 1993 and 2002, with the first feature film, Fight The Future, released in 1998.
David Duchovny and Gillian Anderson filmed I Want To Believe in Vancouver, Canada, last Christmas.
A trailer for the movie shows their two characters, Fox Mulder and Dana Scully, looking for a body frozen in a lake with dozens of other FBI agents.
Duchovny, 47, says the relationship between the pair remains tense sexually.
"The relationship of the love story between Mulder and Scully is interwoven with this thriller," he said.
"It ties into the characters as part of the mythology and my character as a believer and Gillian's character as a sceptic and we butt heads in the way we always have."
BY-BBC NEWS
