The CW has released the official trailer for the 2-night 4-way “Crisis on Earth-X” crossover between “Supergirl”, “The Flash”, “Arrow”, an “DC’s Legends of Tomorrow”.
Titled “Crisis on Earth-X”, this new crossover between “Supergirl”, “Arrow”, “The Flash”, and “DC’s Legends of Tomorrow” will begin on Monday, November 27 with “Supergirl” and “Arrow”, and continue on Tuesday, November 28 with “The Flash” and “DC’s Legends of Tomorrow”.
— Supergirl (@TheCWSupergirl) November 20, 2017
THE EPIC FOUR-WAY CROSSOVER WITH “ARROW,” “SUPERGIRL,” “THE FLASH” AND “DC’S LEGENDS OF TOMORROW” BEGINS
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.
Larry Teng directed the episode with story by Andrew Kreisberg & Marc Guggenheim and teleplay by Robert Rovner & Jessica Queller.