TV The X-Files - Season 8 Episode 20 : Essence (1) The X-Files - Season 8 Episode 20 : Essence (1) 8.372/10 by 3394 users Mulder and Doggett join forces to investigate the arson attack on a genetics lab where one of the doctors suspected of experimenting with alien impregnation is killed. They encounter Billy Miles, who has been changed into an alien replicant after his recent abduction and is attempting to erase evidence of the tests. When a woman helping Scully out at home is found to be a part of the conspiracy, the agents, along with Monica Reyes and Alex Krycek, know they must protect Scully and her baby from Billy Miles and get her out of the city. Details Casts Posters Images Title The X-Files - Season 8 Episode 20 : Essence (1) 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 Episodes List The X-Files Season 8 :Episode 1 Within (1) Within (1) 2000-11-05 The exploits of FBI Special Agents Fox Mulder and Dana Scully who investigate X-Files: marginalized, unsolved cases involving paranormal phenomena.... The X-Files Season 8 :Episode 2 Without (2) Without (2) 2000-11-12 The exploits of FBI Special Agents Fox Mulder and Dana Scully who investigate X-Files: marginalized, unsolved cases involving paranormal phenomena.... The X-Files Season 8 :Episode 3 Patience Patience 2000-11-19 The exploits of FBI Special Agents Fox Mulder and Dana Scully who investigate X-Files: marginalized, unsolved cases involving paranormal phenomena.... The X-Files Season 8 :Episode 4 Roadrunners Roadrunners 2000-11-26 The exploits of FBI Special Agents Fox Mulder and Dana Scully who investigate X-Files: marginalized, unsolved cases involving paranormal phenomena.... The X-Files Season 8 :Episode 5 Invocation Invocation 2000-12-03 The exploits of FBI Special Agents Fox Mulder and Dana Scully who investigate X-Files: marginalized, unsolved cases involving paranormal phenomena.... The X-Files Season 8 :Episode 6 Redrum Redrum 2000-12-10 The exploits of FBI Special Agents Fox Mulder and Dana Scully who investigate X-Files: marginalized, unsolved cases involving paranormal phenomena.... The X-Files Season 8 :Episode 7 Via Negativa Via Negativa 2000-12-17 The exploits of FBI Special Agents Fox Mulder and Dana Scully who investigate X-Files: marginalized, unsolved cases involving paranormal phenomena.... The X-Files Season 8 :Episode 8 Surekill Surekill 2001-01-07 The exploits of FBI Special Agents Fox Mulder and Dana Scully who investigate X-Files: marginalized, unsolved cases involving paranormal phenomena.... The X-Files Season 8 :Episode 9 Salvage Salvage 2001-01-14 The exploits of FBI Special Agents Fox Mulder and Dana Scully who investigate X-Files: marginalized, unsolved cases involving paranormal phenomena.... The X-Files Season 8 :Episode 10 Badlaa Badlaa 2001-01-21 The exploits of FBI Special Agents Fox Mulder and Dana Scully who investigate X-Files: marginalized, unsolved cases involving paranormal phenomena.... The X-Files Season 8 :Episode 11 The Gift The Gift 2001-02-04 The exploits of FBI Special Agents Fox Mulder and Dana Scully who investigate X-Files: marginalized, unsolved cases involving paranormal phenomena.... The X-Files Season 8 :Episode 12 Medusa Medusa 2001-02-11 The exploits of FBI Special Agents Fox Mulder and Dana Scully who investigate X-Files: marginalized, unsolved cases involving paranormal phenomena.... The X-Files Season 8 :Episode 13 Per Manum Per Manum 2001-02-18 The exploits of FBI Special Agents Fox Mulder and Dana Scully who investigate X-Files: marginalized, unsolved cases involving paranormal phenomena.... The X-Files Season 8 :Episode 14 This Is Not Happening (1) This Is Not Happening (1) 2001-02-25 The exploits of FBI Special Agents Fox Mulder and Dana Scully who investigate X-Files: marginalized, unsolved cases involving paranormal phenomena.... The X-Files Season 8 :Episode 15 Deadalive (2) Deadalive (2) 2001-04-01 The exploits of FBI Special Agents Fox Mulder and Dana Scully who investigate X-Files: marginalized, unsolved cases involving paranormal phenomena.... The X-Files Season 8 :Episode 16 Three Words Three Words 2001-04-08 The exploits of FBI Special Agents Fox Mulder and Dana Scully who investigate X-Files: marginalized, unsolved cases involving paranormal phenomena.... The X-Files Season 8 :Episode 17 Empedocles Empedocles 2001-04-22 The exploits of FBI Special Agents Fox Mulder and Dana Scully who investigate X-Files: marginalized, unsolved cases involving paranormal phenomena.... The X-Files Season 8 :Episode 18 Vienen Vienen 2001-04-29 The exploits of FBI Special Agents Fox Mulder and Dana Scully who investigate X-Files: marginalized, unsolved cases involving paranormal phenomena.... The X-Files Season 8 :Episode 19 Alone Alone 2001-05-06 The exploits of FBI Special Agents Fox Mulder and Dana Scully who investigate X-Files: marginalized, unsolved cases involving paranormal phenomena.... The X-Files Season 8 :Episode 20 Essence (1) Essence (1) 2001-05-13 The exploits of FBI Special Agents Fox Mulder and Dana Scully who investigate X-Files: marginalized, unsolved cases involving paranormal phenomena.... The X-Files Season 8 :Episode 21 Existence (2) Existence (2) 2001-05-20 The exploits of FBI Special Agents Fox Mulder and Dana Scully who investigate X-Files: marginalized, unsolved cases involving paranormal phenomena....