About Supergirl Season 3, Episode 8 : Crisis on Earth-X, Part 1

Barry and Iris’s 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, The Ray, Felicity Smoak, Iris West and Alex Danvers to take on their most formidable villains yet. Earth’s mightiest heroes – Green Arrow, Supergirl, The Flash and White Canary – lead their teams into battle to save the world. Guest Stars: Emily Bett Rickards, Danielle Nicolet, Keiynan Lonsdale, Jesse L. Martin, Candice Patton, Dominic Purcell, Patrick Sabongui, Victor Garber, Franz Drameh, Robyn Bradley, Paul Herbert, Jessica Parker Kennedy, Luke Roessler, Christina Brucato, Isabella Hofmann, William Katt, Anthony Ames, Mackenzie Gray, Jay MacDougald, Andrea Pizarro, Jeremy Schuetze, Chris Walters, Carlos Valdes, Danielle Panabaker, Grant Gustin, Caity Lotz, Stephen Amell, Tom Cavanagh, David Hayter,