what season is crisis on earth x part 1
Crisis on Earth-X "Crisis on Earth-X" is the fourth annual Arrowverse crossover event, featuring episodes of the live-action television series Supergirl, Arrow, The Flash, and Legends of Tomorrow on The CW. The crossover began on November 27, 2017, with Supergirl and Arrow, and concluded on November 28, with The Flash and Legends of Tomorrow. In "Crisis on Earth-X", Barry Allen and Iris West's friends come to Central City for their wedding, only for the proceedings to be interrupted by interlopers from analogous universe of Earth-X where World War II was won by the Axis Powers.
The X-Files The X-Files is an American science fiction drama television series created by Chris Carter. The original television series aired from September 10, 1993, to May 19, 2002, on Fox. The program spanned nine seasons, with 202 episodes. A short tenth season consisting of six episodes premiered on January 24, 2016. Following the ratings success of this revival, Fox announced in April 2017 that The X-Files would be returning for an eleventh season of ten episodes. The season premiered on January 3, 2018. In addition to the television series, two feature films have been released: The 1998 film The X-Files, which took place as part of the TV series continuity, and the stand-alone film The X-Files: I Want to Believe, released in 2008, six years after the original television run had ended.