The X-Files

FBI special agents probe cases involving phenomena that defy conventional explanations.

Terry O'Quinn Guest Star Roles

Terry O'Quinn Is the Guest Star King: 10 Roles You May Have Forgotten

TV Cast Replacements

10 Times TV Shows Tried to Replace Their Lead Stars

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'The X-Files' Cast Reunites to Perform Iconic Theme Song (VIDEO)

TV Opening Credits

'Westworld,' 'Friends' & 9 More of TV's Best Title Sequences (VIDEO)

Sci-Fi Fantasy Series to Watch

Escape Into New Worlds With These 11 Sci-Fi & Fantasy TV Shows

Bones / Castle / Veronica Mars

10 Best Christmas-Themed Episodes of Crime Series (PHOTOS)

NCIS 1701 Ziva changed

9 TV 'Deaths' Like 'NCIS's Ziva That Were Just Fake-Outs (VIDEO)

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The 14 Best Sci-Fi Shows to Stream Right Now (PHOTOS)

SUPERNATURAL

5 Groundhog Day Episodes to Stream on Hulu, Netflix, Amazon & More

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7 'X-Files' Stars' Not-So-Spooky Returns to TV (PHOTOS)

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See Gillian Anderson's Post-'X-Files' Role in Netflix's 'Sex Education' (PHOTOS)

tv-to-movies

How 9 TV Shows Fared on the Big Screen (PHOTOS)

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Behold the Top-Rated New TV Shows for the Last 20 Seasons (PHOTOS)

Gillian Anderson and David Duchovny Portrait Session

7 Most '90s Things About the 'X-Files' Pilot, Now 25 Years Old

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12 of the Best Female Leads From Sci-Fi Shows (PHOTOS)

The 100

7 Shows to Check Out If You Miss 'The 100' (PHOTOS)

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9 TV Stars Returning to the Small Screen in 2018-2019

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Gillian Anderson Not Surprised Fox Isn't Bringing Back 'X-Files'