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Poster for Crossover: Elseworlds
2018–19 season · Dec. 2018

Crossover: Elseworlds

Barry and Oliver swap lives; Batwoman debuts

Runtime2h06Where to watchTBCIn your marathonnot seen yet
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Do you need to watch it?

Yes. It's in the Main story, the list of only what moves the plot forward to the end of the saga.

Where it falls in the order

  • Main story28 of 39
  • Chronological43 of 65
  • Everything50 of 79
  • Arrow only16 of 20
  • The Flash only18 of 26
  • Supergirl only13 of 18
  • Batwoman only1 of 6
BeforeLegends of Tomorrow · S4AfterThe Flash · S5 · ep. 10–22

Episodes, in this order

  1. The Flash S5E9
  2. Arrow S7E9
  3. Supergirl S4E9
Spoilers for this title

Quick recap

Barry and Oliver wake up with their lives swapped: everyone sees Oliver as the Flash and Barry as the Green Arrow. They head to Kara's Earth for help and meet Clark and Lois in Smallville. A mysterious man, the Monitor, has given John Deegan, an Arkham Asylum psychiatrist, the Book of Destiny, which can rewrite reality. In Gotham, the trio meets Kate Kane, who helps them against Deegan. Deegan rewrites everything again, turning himself into a black-suited Superman and Barry and Oliver into criminals. With Kara and Clark, they recover the book and fix reality. Oliver makes a secret deal with the Monitor to save Barry and Kara. At Arkham, Deegan gets an ominous visitor.

No spoilersOpens once you mark the title as seen.
3 easter eggs

Hidden details

  1. CameoThe 1990 Flash, theme and all

    John Wesley Shipp suits up again in a recreated 1990 Flash costume, scored with Danny Elfman's theme from that show.

    source ↗
  2. ReferenceThe Smallville farm

    The Kent farm is the same location used on Smallville, and the scene plays Remy Zero's "Save Me," that show's theme song.

    source ↗
  3. SetupWorlds will live, worlds will die

    In the last scene, someone tells Deegan: "Worlds will live, worlds will die, and the universe will never be the same." It's the tagline of the 1985 comic Crisis on Infinite Earths.

    source ↗
No spoilersThe easter eggs give away parts of the title. They open once you mark it as seen.

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