**Supergirl Season 3 (Crossover Promo 'Crisis on Earth X')**
Prepare yourself for an epic crossover event! The first promo for the "Crisis on Earth-X" crossover between Supergirl, Arrow, The Flash, and Legends of Tomorrow has been released, and it promises an action-packed adventure that will span all four shows. In this thrilling promo, we get a glimpse of the alternate Earth-X, where the Nazis have won World War II and the heroes of the Arrowverse must team up to stop them.
| Channel | Category | Duration | Views |
|---|---|---|---|
| Music | TV Clip | 00:30 | 9 |
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