TV The X-Files The X-Files 8.372/10 by 3394 users The exploits of FBI Special Agents Fox Mulder and Dana Scully who investigate X-Files: marginalized, unsolved cases involving paranormal phenomena. Mulder believes in the existence of aliens and the paranormal while Scully, a skeptic, is assigned to make scientific analyses of Mulder's discoveries that debunk Mulder's work and thus return him to mainstream cases. Details Casts Posters Images Title The X-Files Alternative Titles Arquivo X(1993), X档案, Akte X, Expediente X, X Files, Ανεξερεύνητες Υποθέσεις, X檔案, پرونده های مجهول, پروندههای مجهول, 엑스 파일, X-파일, 엑스파일, X 파일, X파일, Los Expedientes Secretos X, Секретні матеріали, The X-Files First Air Date 1993-09-10 Last Air Date 2018-03-21 Number of Episodes 218 Number of Seasons 11 Genres Mystery, Sci-Fi & Fantasy, Crime, Networks FOX, Casts David Duchovny, Gillian Anderson, Mitch Pileggi Plot Keywords , Fox Mulder David Duchovny Dana Scully Gillian Anderson Walter Skinner Mitch Pileggi