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Crisis on Earth-X, Part 4 

The gang comes together for Barry and Iris's wedding, but the ceremony is crashed by villains from Earth-X.


Gregory Smith


Greg Berlanti (developed by), Marc Guggenheim (developed by) | 6 more credits »




Episode cast overview, first billed only:
Victor Garber ... Dr. Martin Stein
Brandon Routh ... Ray Palmer / The Atom
Caity Lotz ... Sara Lance / White Canary
Franz Drameh ... Jefferson Jackson / Firestorm
Maisie Richardson-Sellers ... Amaya Jiwe / Vixen
Amy Louise Pemberton ... Gideon (voice)
Tala Ashe ... Zari Tomaz
Nick Zano ... Nate Heywood / Steel
Dominic Purcell ... Mick Rory
Stephen Amell ... Oliver Queen / Green Arrow / Black Arrow
David Ramsey ... John Diggle
Emily Bett Rickards ... Felicity Smoak
Tom Cavanagh ... Dr. Harry Wells / Eobard Thawne / Reverse-Flash
Chyler Leigh ... Alex Danvers
Candice Patton ... Iris West


Barry (guest star Grant Gustin) and Iris's (guest star Candice Patton) wedding brings the gang together, but things go awry when villains from Earth-X attack the ceremony. All of the superheroes band together with help from their super friends like Citizen Cold (guest star Wentworth Miller), The Ray (guest star Russell Tovey), Felicity Smoak (guest star Emily Bett Rickards), Iris West and Alex Danvers (Chyler Leigh) to take on their most formidable villains yet. Earth's mightiest heroes - Green Arrow (guest star Stephen Amell), Supergirl (Melissa Benoist), The Flash (guest star Grant Gustin) and White Canary (guest star Caity Lotz) - lead their teams into battle to save the world.

Plot Summary | Add Synopsis


TV-14 | See all certifications »

Parents Guide:

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Did You Know?


Other than a couple of cameos, Russell Tovey is technically the only real guest star in the entire crossover. The remaining cast members have regular or recurring roles in one of the Arrowverse shows. See more »


Mr. Terrific points out that Overgirl has absorbed so much radiation that she is about to reach the Chandrasekhar Limit and go supernova. The Chandrasekhar Limit only applies when an white dwarf star reaches a mass approximately 1.4x our sun. Even if it was applicable to Overgirl, the resulting supernova explosion would have completely destroyed the earth, given the close proximity, not to mention most of the rest of the inner solar system. See more »


Oliver Queen: Thanks for your help.
Leo Snart: We're not done helping yet. Our enemies are still on your earth, Ollie.
Oliver Queen: Don't call me that.
Leo Snart: Give it time, I'll get through that crusty exterior.
Sara Lance: No, you really won't.
Leo Snart: I was talking to you.
See more »

Crazy Credits

The usual opening narration and title card are replaced by a special "Crisis on Earth-X" sequence. See more »


References Star Raiders (1979) See more »

User Reviews

I hate crossover episodes
22 May 2019 | by Jinx-to-EnnienSee all my reviews

Since I stream this show on Netflix I don't watch the other shows involved in crossover episodes. This makes understanding what is going on impossible. I wish they would confine storylines to one episode.

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Release Date:

28 November 2017 (USA) See more »

Company Credits

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Technical Specs


Sound Mix:

Dolby Digital (5.1)



Aspect Ratio:

16:9 HD
See full technical specs »

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