This summer, David Duchovny and Gillian Anderson will step back into the roles of Mulder and Scully for X-Files: I Want To Believe and IGN has a trailer for the film. The film is written by show creator Chris Carter along with Frank Spotnitz and Carter is also directing. The original X-Files film brought in $187 million worldwide and the latest installment hits theatres July 25th when it will open against the Judd Apatow-produced Step Brothers.