FBI agents Fox Mulder (David Duchovny) and Dana Scully (Gillian Anderson) trail an intricate conspiracy around a prehistoric extraterrestrial virus in this feature-length film based on the hit sci-fi television series. When the long-dormant strain reemerges at a housing development in a Dallas suburb, an unknown organization goes to extraordinary lengths to cover up the truth behind the mysterious disease. Martin Landau and Blythe Danner co-star.